KZYEE feature image

KZYEE

Review rating Review rating Review rating Review rating Review rating 4.4 Fact checked

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

When purchasing a product, price is the consumer's primary concern. At present, KZYEE has 27 products for sale. KZYEE products range in price from $6.99 to $189.99, and the average price of all the products is about $76.3.

You can confidently purchase KZYEE products from the seller KZYEE US. The brand holds an average rating of 4.4, testifying to its excellent reputation.

KZYEE Best Sellers

Last Updated: Jan 9, 2026

KZYEE KM10 Power Circuit Probe Kit, 12V 24V Automotive Circuit Tester, Digital Multimeter, Short Finder, AC/DC Voltage Tester, Diode & Resistance, Current Probe Component Activation, 20FT+20FT Cable

[ One Probe Tester Replaces All – Diagnose Every Circuit, Fix It Fast ] Highly recommended by YouTuber mechanics like Tomeighty and AutoFun. The KM10 power circuit probe tool combines all key electrical tests -- Circuit Breaker & Open Circuit Detection, AC/DC Voltage & Polarity Test, Resistance, Diode & Continuity Check, Ground & Signal Circuit Test, Component Activation and Wire Tracing. Quickly locate shorts, opens, or bad grounds without pulling panels. Work smarter, fix faster – you deserve this tool.
[ Find Electrical Faults Fast – Stop Wasting Time Chasing Wires ] The KM10 power circuit tester kit identifies shorts, opens, and bad grounds in seconds using LED and tone cues. No need to remove panels or fuses—just follow the signal. Ideal for cars, trucks, motorcycles, trailers, and boats, this power tester simplifies fault tracing across 6–30V systems. Built-in overload protection prevents fuse damage during tests, ensuring safe and efficient diagnostics every time.
[ See What Others Miss – Reveal Hidden Signals in Real Time ] Acting as a current probe and electrical system probe tester, the circuit tester reads live DC/AC voltage, frequency, and signal waveforms to detect unstable grounds, weak sensors, or intermittent faults. The color TFT display visualizes signals under real load so you can spot issues early. Ideal for diagnosing injectors, PWM signals, and sensor outputs that ordinary testers miss—saving hours of diagnostic time and preventing costly repairs.
[ Verify Before You Replace – Power and Test Components Instantly ] Avoid replacing good parts. The power circuit probe kit instantly powers or grounds components such as lights, fans, pumps, relays, injectors, and trailer lights to verify function. One touch reveals if a component is bad or miswired. Activate parts directly through the probe and confirm before replacing. It cuts repair time, reduces part waste, and ensures every fix is accurate the first time.
[ Safe, Smart & Self-Protected – Auto-Reset Breaker Built In ] Work confidently with built-in protection. The KM10 automotive electrical tester features a 10A auto-reset circuit breaker that trips instantly on overload and restores power within seconds. Prevent sparks or blown fuses while testing sensitive circuits. The durable design makes this power tester probe reliable for long-term shop use, combining safety and stability in every test.
[ Go Further, See Clearer – 40FT Reach & LED Work Light ] Reach any corner easily with 40ft cable—ideal for long trucks, trailers, or RVs. The circuit tester automotive tool includes a bright LED flashlight and color TFT screen for clear visibility even in dark spaces. Test voltage, signal, and component activation anywhere without moving the battery source. Whether day or night, this probe tester keeps you efficient and in control on every job.
[ Instant Polarity & Continuity Check – Know It at a Glance ] Red and green LEDs instantly show positive, negative, or open circuits, while a buzzer confirms continuity. The electrical system tester translates readings into clear visual feedback—just touch, see, and hear. Simplify diagnostics, eliminate guesswork, and get instant confidence in every result. Because every second saved is a win in your garage.
[ Trusted by Pros & YouTubers – Professional Results, Real Value ] Recommended by top YouTuber mechanics like Tomeighty and AutoFun, the KM10 Circuit Probe Tester delivers diagnostic capability equal to P~P~3/P~P~4-type tools, but with safer breaker protection, smarter signal display, and greater value. Built for both professionals and DIYers, this automotive circuit tester includes a 1-year warranty and lifetime technical support—because real tools earn trust through performance, not promises.

KZYEE KT60 Digital Timing Light with RPM & Advance Angle, Automotive 12V Inductive Ignition Timing Light Gun for Distributor-Equipped Gasoline Engines

Clear Digital Display – Digital Ignition Timing with Real RPM & Advance: Unlike basic timing lights that only flash, the KT60 features a clear LCD screen showing real-time engine RPM and your selected 0–90° advance angle. No estimating or guesswork—when you see the numbers, you know your ignition timing is set correctly.
Advance Timing Adjustment – Tune Beyond Idle: Many ignition problems don't appear at idle—they show up under load or higher RPM. With adjustable 0–90° advance, the KT60 lets you verify ignition timing across the full RPM range, helping reduce hesitation, prevent knock, restore power, and improve overall engine efficiency.
Bright Xenon Strobe – Clear Timing Marks When It Counts: The high-contrast xenon strobe keeps timing marks easy to see in dim or crowded engine bays, reducing eye strain and helping you align marks accurately. For best visibility in bright sunlight, marking pulleys with chalk or paint is recommended.
Stable Signal Capture – Smooth Readings up to 10,000 RPM: The high-sensitivity inductive pickup delivers stable, consistent timing signals without flicker or drop-off, even at higher engine speeds. Reliable signal capture keeps timing marks steady, making ignition checks more accurate and repeatable.
Designed for 12V Gasoline Engines – Simple to Use, Built to Last: Supports 2- and 4-stroke 12V gasoline engines, including classic cars, motorcycles, ATVs, marine engines, and small engines. Not for diesel, hybrid, or electric vehicles. Simply clip to the No.1 spark plug wire and connect to 12V power. Built with automatic polarity detection, overload protection, and a rugged, impact-resistant housing for long-term, dependable use.

KZYEE KM50 (Upgrade of KM10) Power Circuit Probe Kit - 12V/24V Automotive Circuit Tester Current Probe with AC/DC Voltage/Resistance/Diode/Frequency/Duty Cycle/Fuel Injection, Activate Component

[7️⃣-Mode Advanced Circuit Diagnostics – Beyond Basic Power Circuit Probes ] While standard power test probes cover AC/DC voltage, Resistance, and Diode, the KM50 automotive circuit tester goes further with FREQUENCY, DUTY CYCLE, and FUEL INJECTION circuit testing, delivering 7 advanced diagnostic modes in one tool. These signal-level tests reveal PWM signals, sensor waveforms, and injector control pulses via real-time waveform and digital displays -- helping identify weak sensors, unstable signals, or abnormal injection behavior with confidence.
[ Real-Time Waveform Display – Catch Faults Basic Testers Miss ] Intermittent faults often look “normal” in static voltage readings but fail under real operating conditions. The TFT color display shows live signal waveforms, revealing injector control pulses, duty-cycle fluctuations, and abnormal voltage patterns as they occur. Adjustable sampling and dual waveform/digital views expose unstable signals, dropouts, and irregular behavior that basic power diagnose probes can't show -- helping you pinpoint the real cause instead of guessing or replacing good parts.
[Diagnose Faster – Trace Shorts and Bad Grounds in Minutes] KM50 turns complex electrical checks into a guided, time-saving process. Visual LEDs and buzzer alerts instantly show voltage, ground and continuity status, helping you locate shorts, opens and faulty grounds in minutes. This power diagnostic probe combines efficiency and accuracy, while the built-in auto-reset breaker protects both the vehicle and the tool—so you work faster and finish repairs right the first time.
[Instant Component Activation – Know If It's the Part or the Wire] Press the rocker switch to apply positive or negative current and power components instantly – lights, fans, motors or injectors. This power signal probe tester allows direct component activation to verify circuits without removing parts. No jumper leads, no disassembly, no guessing – just quick, reliable proof that saves time, money and unnecessary part swaps.
[Auto-Reset Circuit Breaker – Safe for Modern ECU Systems] Built for today's computerized vehicles, the internal auto-reset breaker instantly cuts power during overload and resets automatically within a minute. The low-current (
[Smart Feedback Design – Visual, Audible and Practical] Red/green LEDs and tone alerts instantly indicate polarity and continuity. A built-in LED work light illuminates dark engine bays, and the ergonomic anti-slip grip ensures one-hand operation with comfort and control. Whether under a dashboard or beneath a truck, this power diagnostic probe tester keeps you focused on results, not on reading manuals – a must-have automotive diagnostic circuit tester for professionals and beginners alike.
[Universal Compatibility – Cars, Trucks, RVs and Boats] Covering 8–30 V DC, this automotive power circuit probe tester works seamlessly on 12 V and 24 V systems across cars, diesel trucks, trailers and marine equipment. Wherever electricity flows, it helps you trace, test and repair circuits quickly – a portable, versatile power wire probe trusted by technicians and DIYers alike.
[Built Tough – Professional-Grade Durability and Precision ] Encased in impact-resistant ABS plastic and reinforced with heavy-duty cables, KM50 is engineered for daily workshop use. Includes probe tip, ground lead, extension cable and battery clamp, all stored in a protective EVA hard case. A professional-grade heavy duty power circuit probe designed to perform reliably job after job and built to withstand years of demanding diagnostics.

KZYEE KT80 Next-Gen Digital Ignition Diagnostic Tool - Upgraded LED Timing Light for Distributor Gasoline Engines, Digital Ignition Timing, RPM/Tach, Advance, Dwell & Voltage Test (6V/12V)

From Flash-Only to Digital — Now an Ignition Diagnostic Upgrade: Traditional timing lights started as flash-only tools. Later digital models added RPM and advance angle displays, with stroke selection and manual advance settings. KT80 professional timing light represents the next upgrade stage—building on digital timing with dwell angle and true voltage diagnostics, so ignition timing is not only visible and adjustable, but fully verifiable.
Dwell Angle & True Voltage Diagnostics — Verify Ignition Health: This timing light automotive goes beyond basic timing setup by adding digital dwell angle measurement and true 0–35V voltage diagnostics. These measurements help identify weak coils, incorrect breaker point gaps, unstable charging, and voltage drops—allowing root causes to be fixed early instead of repeatedly re-adjusting timing by guesswork.
Built-In Rechargeable Battery with 12V Backup — Works When Others Can't: Unlike clip-only engine timing lights that rely entirely on vehicle battery condition, it features a built-in rechargeable lithium battery with 12V backup support. This dual-power design ensures stable operation during long tuning sessions, weak batteries, or hard-to-access engine bays—so work doesn't stop halfway through a job.
True 6V & 12V Compatibility for Distributor Gasoline Engines: When fully charged, the internal power system allows independent operation from vehicle voltage, enabling true compatibility with both 6V and 12V distributor-equipped gasoline engines. Ideal for classic cars, vintage motorcycles, tractors, and restoration projects where standard digital timing lights fall short.
Long-Life LED Strobe with 60° Adjustable Head — Built for Heat & Reliability: KT80 ignition timing light replaces traditional xenon flash tubes—which are prone to heat damage and shorter service life—with a high-stability LED strobe designed for consistent output under engine-bay temperatures. The 60° adjustable head improves visibility and alignment in tight spaces, reducing misalignment and repeat checks during fine timing adjustments.

KZYEE KM601 Power Circuit Probe Kit, 12V-24V Automotive Circuit Tester with Fuel Injector, Battery Test, Multimeter, Oscilloscope, Short Circuit Finder, Component Activator, Current Probe, 30FT Cable

[All-in-One Circuit Diagnostic Power — SIGNAL, POWER & SYSTEM Testing] Stop switching between multiple testers during electrical diagnostics. The KM601 power circuit probe combines signal-level analysis, power circuit testing, and system diagnostics in one handheld tool—covering oscilloscope waveform analysis, component activation, relay testing, and battery diagnostics within a single platform. Designed for professional garages and workshops, it delivers accurate results from one connection, reducing setup time while replacing several dedicated electrical testers.
[ 8 Professional Diagnostic Modes — 20+ Core Tests in One Platform] Built around 8 professional diagnostic modes, each integrating multiple test functions for comprehensive electrical analysis. It delivers 20+ core tests covering oscilloscope signal analysis, injector voltage and pulse width testing, circuit integrity checks, relay operation, and complete 12V battery diagnostics including health, cranking, and charging systems. Supporting 8–35V electrical systems, it consolidates signal, power, and system-level testing into one professional platform.
[Fuel Injector Signal Analysis — Find Control Issues Before Replacing Parts] Diagnose fuel injector control signals to determine whether a problem comes from the injector itself, the wiring, or the ECU command. By measuring injector voltage up to 0–260V and pulse width from 0–25 ms, KM601 circuit probe tester shows waveform and digital data together, helping confirm stable drive signals and correct timing. This allows users to identify misfires, rough idle, or hard-start issues accurately—before unnecessary injector replacement or repeated teardown.
[Integrated 12V Battery, Cranking & Charging System Test] Ever been stranded because your battery gave out without warning? Not anymore. Our super circuit probe kit features an auto-detection 12V battery tester that checks health, cranking amps, and charging status—instantly. Compatible with all types: Flooded, AGM, GEL, and EFB. Detect weak batteries, alternator problems, or voltage drops before they ruin your day. Just test and go—it's peace of mind in your pocket.
[Oscilloscope & Multimeter — See Signal Behavior, Not Just Voltage] Most testers just tell you the voltage. Our probe tester shows you what's really going on. It features a real-time digital oscilloscope and multimeter, so you can watch signal waves live. Got a misfire? A bad ground? Sensor issues? You'll see them instantly. With one-button switching between waveform visuals and digital readouts, it's like having X-ray vision for your vehicle's wiring. And yes—it's beginner-friendly too!
[Safe Component Activation — No Jumper Wires Required] No more fumbling with jumper wires or battery packs. The automotive electrical tester powers components on the spot—starter motors, radiator fans, fuel pumps, relays—you name it. You'll check function and pinpoint issues right from the probe, with zero setup. This is next-level speed and convenience, and trusted by real techs—once you try it, there's no going back.
[Short Circuit Detection with Built-In Protection] Shorts and overloads? Bring it on. Built-in circuit breaker and 10A fuse protect you AND the car—so test with confidence. Even better? You can track circuit shorts in real time. Just energize, follow the sound, and find the fault—no wire pulling, no fuse blowing, no guesswork. This tool gives YOU the power to diagnose fast, fix smart, and protect your ride.
[Professional Kit with Warranty & Technical Support] Each KM601 comes with a durable carry case, replaceable fuse, and 30ft cable for extra reach. 12-Month Warranty, 30-Day Hassle-Free Returns, Lifetime Tech Support from Real Humans. Have questions? We've got your back—e-mail us anytime at support@kzyeetech. com. We will reply you within 24 hours.

KZYEE KC601 Heavy Duty Diesel Truck Scanner – Full-System Diagnostic Tool fits for Cummins, CAT, Freightliner, International, Mack & More – Read ECU Data, Clear DTCs, View Live Data

[ Prevent Downtime – Keep Trucks Moving & Money Flowing ] Every hour a diesel truck sits idle means lost loads, lost pay, and broken schedules. The KC601 heavy-duty truck scanner reads and clears fault codes, displays live data, and retrieves ECU information so you can detect issues before breakdowns happen. Designed for fleets and owner-operators who can't afford delays, it helps avoid towing bills, keep customers satisfied, and keep profits rolling mile after mile.
[ Lifetime Free Updates – Buy Once, Earn for Years ] Your diesel truck deserves lasting value. With lifetime free updates, this heavy-duty diagnostic tool grows with your fleet—no subscriptions, no hidden fees, no paywalls. Always ready for the latest trucks, engines, and protocols, it keeps your business compliant, reliable, and profitable without draining your wallet or slowing your haul.
[ Complete Coverage – Confidence Across Every System ] From engines and transmissions to fuel and brake systems, this diesel truck diagnostic tool gives you total confidence that every mile earns. Replace multiple tools and endless guesswork with one dependable device built for heavy-duty professionals. Reduce surprise breakdowns, protect freight, and keep your fleet efficient wherever the road leads.
[ Faster Connections – Efficiency You Can Feel ] Skip tangled cables and wasted minutes. Wireless 6-pin, 9-pin, and 16-pin diesel adapters deliver fast, stable, professional-grade connections for 12V and 24V trucks. Move from vehicle to vehicle smoothly, finish more jobs per day, and turn downtime into productivity—because every second saved means more trucks earning on the road.
[ Always Organized – Rugged Bag for Real-World Work ] Real truck pros don't waste time searching for tools. The included heavy-duty storage bag keeps every diesel adapter, cable, and connector safe, sorted, and ready. Whether in the workshop or roadside, you look professional and stay efficient. Save minutes on every job and turn that time into miles, deliveries, and steady income.
[ Broad Compatibility – Built for the Trucks You Drive ] Covers most Class 4–8 diesel trucks powered by leading engines like Cummins, Detroit, Caterpillar, Volvo, and more. It's the confidence of knowing one reliable tool fits your entire fleet. No subscriptions, no limits—just consistent coverage that keeps your diesel trucks compliant, connected, and ready for every route ahead. Coverage may vary by year or model—confirm before purchase.
[ Built Tough – The Diesel Tech's Trusted Partner ] This isn't a delicate gadget—it's a heavy-duty diagnostic tool engineered for the realities of diesel work. Trusted by fleet managers, mechanics, and drivers nationwide, it's built to last through shop spills, roadside grit, and long hauls. When uptime is everything, this truck scanner keeps your operation earning and your business growing.

KZYEE KS40 Spark Plug Tester – Dual Hole, 0–6000RPM Adjustable, Real-Load Ignition Coil & Misfire Tool for 12V Gas Engines – Safe, Pro-Grade Tool for Car, Motorcycle & Small Engines

[ Fix It Right the First Time – End the Guesswork ] Hard starts, poor acceleration, and unstable idling often point to faulty plugs or coils. KS40 displays spark strength and stability under real load, pinpointing root causes instantly. Stop guessing and replacing parts blindly—diagnose smarter, save time and money, and fix it correctly on the first try.
[ Reveal Hidden Failures – From Idle to 6000 RPM ] Simulate real engine speeds up to 6000 RPM to uncover weak sparks, delayed ignition, and hidden misfires that basic spark testers miss. Detect faults early to prevent rough idle, poor fuel economy, and costly repairs. Ideal for professionals and DIYers who need reliable, accurate spark plug and ignition coil testing results.
[ Dual-Port Efficiency – Compare Two Cylinders Instantly ] Test two spark plugs side by side to compare spark intensity and timing in real time. Weak cylinders stand out immediately, enabling faster and more accurate diagnosis. Mechanics can complete more jobs in less time, while DIYers get clear, visual confirmation without confusion or extra tools.
[ Safety First – Fully Enclosed Spark-Proof Design ] High-voltage sparks can be dangerous. KS40's fully enclosed transparent cover activates only when securely locked, preventing accidental electric shocks while allowing you to observe spark behavior clearly. Safe for beginners and professionals alike—work confidently with full protection every time.
[ Universal 12V Compatibility – Plug, Lock & Test ] Compatible with all 12V GASOLINE engines in cars, motorcycles, ATVs, UTVs, boats, and lawn equipment. Simply insert the plugs, close the lid, and power up—no setup, adapters, or tools required. With 100–240V AC input, KS40 is always ready for quick, safe, and precise spark plug diagnostics anywhere.

KZYEE KM06 Essential Power Circuit Probe Kit, 4-Mode Automotive Electrical Tool for 8–35V Systems, Stable Voltage & Continuity Check, Safe Component Activation for DIY Repairs

[ Electrical Issues Hit Without Warning – Fix Them Fast with One Reliable Tool ] Electrical failures always strike unexpectedly—flickering headlights, blown fuses, dead circuits, or power drops while driving. The KM06 power circuit probe kit functions as a versatile automotive circuit probe, combining circuit breaker and short/open tracing, DC/AC voltage and polarity testing, resistance, diode and continuity checks, ground and signal testing, component activation, trailer light checking, and wire tracking. One compact tool handles real electrical emergencies with confidence.
[ Four Smart Test Modes Reveal the Real Problem When Basic Testers Can't ] Cheap testers flicker, lag, or misread, making diagnosis confusing. KM06 operates as a reliable automotive electrical tester, offering four precision modes—DC Voltage, AC Voltage, Resistance/Continuity, and Diode -- displayed clearly on a bright TFT screen with LED and buzzer cues. These modes decode 95% of everyday electrical faults, guiding you straight to the real issue in fuses, connectors, sensors, or trailer wiring.
[ Find Shorts and Weak Grounds Early – Stop Small Issues from Becoming Big Repairs ] Hidden shorts and poor grounds cause intermittent lights, blown fuses, unstable sensors, and random power loss. Acting as a dependable Power circuit probe, KM06 uses polarity LEDs, continuity mode, wire tracing, and an auxiliary ground lead to locate wiring faults before they escalate. Early detection prevents bigger electrical failures, saving hours of troubleshooting and unnecessary repairs.
[ Check Trailer Lights and Grounds Before You Tow – Ensure Safe, Reliable Visibility ] Unstable or dead trailer lights increase risks on highways. This automotive test probe verifies voltage delivery, ground integrity, brake-light output, turn signals, and connector continuity. Ierfect for work trailers, utility rigs, campers, and long-distance hauling, ensuring your entire lighting system remains safe, visible, and compliant before every trip.
[ Test Components Before Replacing – Avoid Wasted Purchases and Wrong Repairs ] Replacing parts blindly wastes time and money. With KM06 acting as a power circuit probe, you can instantly activate relays, pumps, motors, fans, and bulbs to confirm what actually works. Auto-reset overload protection keeps testing safe—even for beginners—preventing accidental shorts and unnecessary part replacements. Diagnose correctly the first time and eliminate guesswork.
[ Built-In Flashlight & TFT Screen – Diagnose Easily in Any Lighting Condition ] Electrical problems often hide in dark, tight areas. This automotive diagnostic probe combines a bright built-in flashlight with a sunlight-readable TFT display, giving you clear visibility under dashboards, inside engine bays, or during nighttime roadside repairs. Better visibility reduces errors and speeds up troubleshooting anywhere you work.
[ Clear Visual Feedback Removes Confusion – Know Circuit Conditions in One Tap ] Unstable wiring creates misleading symptoms. This automotive polarity tester provides instant visual and audio cues -- red for positive, green for ground, beep for continuity, diode mode for directio -- allowing fast circuit confirmation without menus or settings. One tap gives accurate answers and removes the confusion cheaper testers cause.
[ Durable Build for Real-World Use – A Long-Lasting Tool You Can Count On ] Cheap testers fail due to thin cables and weak construction. KM06 is engineered as a long-lasting automotive probe tool, featuring a reinforced cable, impact-resistant housing, and stable internal circuitry that withstands daily use. Ideal for DIY repairs, garage work, shop tasks, and long-term ownership without paying pro-tool prices.

KZYEE 3PCS Replacement Probe Tips ONLY Compatible with KZYEE KM10/KM50 Power Circuit Current Probe Tester

KZYEE 3PCS Replacement Probe Tips

KZYEE KS30 Spark Plug Tester – One-Tap Ignition Coil & Spark Plug Test Tool, Dual-Port Design with Safety Shield, Plug-and-Play for 12V Gasoline Engines

[One-Tap Spark Plug Testing — No Setup Required] Skip complicated adjustments or frequency tuning. The KS30 features a true plug-and-play, one-tap design that lets you instantly check spark plug and ignition coil performance. Just connect, press once, and observe spark behavior in seconds. Ideal for quick diagnostics without prior experience, reducing trial-and-error and helping you confirm ignition issues faster and more confidently.
[Dual-Port Design — Diagnose Faster, Finish Jobs Quicker] The dual-port layout allows you to test two spark plugs or ignition coils without constantly reconnecting cables. This saves time during troubleshooting and makes repeated checks more efficient, especially on multi-cylinder engines. Perfect for quick comparisons and workflow-friendly diagnostics when you want results without slowing down or interrupting your repair process.
[Quickly Identify Weak Spark & Misfire Issues] Visually verify spark plug and ignition coil performance using this spark plug tester under real test conditions. Easily spot weak sparks, inconsistent ignition, or complete no-spark situations before replacing parts. This helps confirm the real cause of misfires, hard starts, or rough running, avoiding unnecessary part swaps and saving time during ignition troubleshooting.
[Integrated Safety Shield for Confident Testing] Designed with a built-in protective cover to help reduce exposure to sparks during testing. This added safety layer improves user confidence when working around ignition systems and helps protect hands during operation. A safer choice for both home garages and daily workshop use, especially for users who want simple, controlled ignition diagnostics.
[Universal Compatibility – Works with Most 12V Gasoline Engines] The spark plug tester is compatible with 12V gasoline engines found in cars, motorcycles, ATVs, lawnmowers, and small generators. It supports testing both spark plugs and ignition coils, helping reduce the need for multiple diagnostic tools during routine checks. Note: Spark plug connector length must be at least 34 mm to fit properly into the internal test socket. Short connector plugs may not be compatible. Clear fit guidance helps ensure correct use and reliable results.
[Zero Learning Curve – One-Button Plug & Play Testing] Effortless operation with no setup or adjustments required. Simply insert the spark plug from any 12V gasoline engine into the KZYEE KS30 spark plug tester, connect it to a 110V–120V power source, close the protective cover, and press one button to start testing. The clear visual spark output makes results easy to understand at a glance, helping prevent misuse or misjudgment during ignition diagnostics.

KZYEE Heavy Duty Truck Diagnostic Adapter Set – 6Pin J1708 & 9Pin J1939 to 16Pin OBD2 Cable, Compatible with Freightliner, Kenworth, Volvo & More, Enables Diesel Vehicle Scan Tool Diagnostics

2-in-1 Heavy-Duty Diagnostic Adapter Set: This truck diagnostic adapter kit includes both 6Pin (J1708) and 9Pin (J1939) connectors, converting heavy-duty diagnostic ports to a 16Pin OBD2 interface. Works with most diesel trucks, buses, and construction vehicles, including Freightliner, Kenworth, Peterbilt, Volvo, and more—ideal for mechanics and fleet managers who use OBD2 vehicle scan tools.
Independent Design – Smarter, Easier, More Flexible: Unlike dual-ended adapters, each connector in this diagnostic cable set works independently, offering better cable management, quicker access, and safer use in tight engine bays. Whether you're using a handheld scanner or a Bluetooth diesel diagnostic tool, the separated design gives you cleaner, faster connections.
Rugged & Reliable Build for Workshop Use: Built from reinforced ABS housing with solid brass pins, these adapters stand up to heat, vibration, and heavy-duty environments. Tested for thousands of plug-in cycles, ensuring stable communication between your truck scanner and vehicle ECU in every diagnostic session.
Plug & Play Truck Diagnostics: No setup or software needed—simply connect the 6Pin or 9Pin adapter to your OBD2 scan tool, and start reading or clearing fault codes instantly. Perfect for quick roadside checks or professional diesel workshops needing efficient, error-free diagnostics.
Essential for Diesel Maintenance & Troubleshooting: Enable full-system communication with your vehicle diagnostic scanner to monitor live data, read engine parameters, and identify DTCs early. Keep your fleet running smoothly, reduce downtime, and prevent costly breakdowns—all with a simple plug-and-play connection.

KZYEE Timing Light Protective Case for KT60 / KT80 – EVA Hard Storage Case Designed for Automotive Ignition Timing Lights (13.4" × 8.3" × 4.9")

Designed for Timing Lights – Custom-fit protective case for KT60 and KT80 ignition timing lights, ensuring proper storage and transport of your timing light tool.
Protects Diagnostic Accuracy – Rigid EVA shell helps protect timing light electronics, cables, and inductive clamps from impact and deformation during automotive diagnostics.
Essential Timing Light Accessory – Built specifically as a storage and protection solution for ignition timing light tools, not a general-purpose tool bag.
Compatible with KT60 / KT80 Timing Lights – Designed to pair with KZYEE timing lights as part of a complete ignition timing solution.

KZYEE Automotive Power Circuit Probe Tester, Short Finder for Fuel Inject, Duty Cycle, Frequency, Trailer Light, Activating Component, 12-24V Electrical System Diagnostic Tool

[ All-in-One Automotive Power Circuit Probe – 12 Functions in One Tool ] Replace multiple testers with one powerhouse. The KZYEE KM50 combines 12 essential functions—DC/AC Voltage, Resistance, Diode, Duty Cycle, Frequency, Fuel Injector, Continuity, Polarity, Ground, Fuse/Relay, Component Activation, and Trailer Wiring. Diagnose 99% of electrical problems fast. One probe, countless uses—save time, space, and money in every repair job.
[ 7 Smart Scan Modes – Pro-Level Accuracy Made Simple ] Simplify diagnostics with professional precision. This advanced automotive circuit tester integrates seven smart modes—DC/AC Voltage, Resistance, Diode, Frequency, Duty Cycle, and Injector Testing—offering instant results without setup hassle. Works with 8–30V systems in cars, trucks, RVs, boats, and trailers. Plug, press, and probe—clear answers in seconds.
[ Component Activation & Signal Circuit Testing – Stop Guessing, Start Fixing ] Directly power or ground components to activate fans, pumps, lights, relays, or injectors and confirm part health instantly. No need to remove or swap parts blindly. The KM50 power current probe identifies shorts, opens, weak grounds, or failing circuits with live voltage feedback. Save labor, reduce downtime, and fix it right the first time—real results, not guesswork.
[ Live Waveform Display – See Hidden Electrical Behaviors Clearly ] Go beyond static readings. The automotive circuit analyzer displays live waveform signals for voltage, frequency, and injector pulses in real time—no oscilloscope needed. Instantly reveal drops, spikes, or unstable duty cycles that basic testers miss. Switch between numeric and waveform view with one tap. Diagnose complex faults faster and more accurately.
[ Fast Circuit Finder + Auto Protection – Diagnose Safer, Faster, Smarter ] Trace broken wires, shorts, or weak grounds in seconds on 12V/24V systems, cars, trucks, and trailers. LED indicators clearly show polarity (Red = Positive, Green = Negative, No Light = Open). Built-in 8A auto-reset circuit breaker protects against overloads—no blown fuses or downtime. The ultimate short finder for garages, workshops, and mobile techs.
[ Smart Design + Trusted Quality – Built to Last, Backed for Life ] Equipped with a piercing probe tip, bright flashlight, LED feedback, and audio beeper for instant confirmation of continuity or polarity. Mute mode ensures quiet work when needed. Includes long power cable, protective carrying case, and rugged construction for shop durability. Covered by 1-year warranty, 30-day r**eturns, and lifetime technical support.

3PCS Small Pointed Piercing Replacement Probes Tips Compatible with KZYEE KM50/KM601 Power Circuit Current Probe Tester, Black

3PCS Small Pointed Piercing Replacement Probes Tips Compatible with KZYEE KM50/KM601 Power Circuit Current Probe Tester, Black

KZYEE KT80 Digital Timing Light with LED Strobe, RPM/Tach, Advance Angle, Dwell, True 0–35V Voltage Test, USB-C Rechargeable & 12V Backup and KZYEE KS30 Spark Plug Tester

[ Upgraded Multi-Function Timing Light for Tuning ] The KT80 goes beyond basic timing lights with three essential ignition tests—Timing, Dwell, and a true 0–35V Voltage range—plus an upgraded LED strobe with up to 10× longer service life and a 60° adjustable head for precise alignment. Supports 6V/12V gasoline engines and offers flexible power for classic tuning and restoration work.
[ Dual-Power Design – Internal Battery + 12V Runtime] Unlike timing lights that rely only on battery clips, the KT80 features a rechargeable internal lithium battery for independent testing, with 12V battery clips as backup for extended sessions. USB-C fast charging keeps you working without interruption. Backup clips require a 12V battery.
[ Advanced LED Strobe – 10× Longer Life, High Stability ] The upgraded LED strobe delivers stable, flicker-free illumination with up to 10× longer lifespan than traditional xenon lights. A 60° adjustable head ensures clear timing marks even in tight or low-light engine bays. Avoid direct sunlight for best visibility.
[One-Tap Spark Plug Testing — No Setup Required] Skip complicated adjustments or frequency tuning. The KS30 features a true plug-and-play, one-tap design that lets you instantly check spark plug and ignition coil performance. Just connect, press once, and observe spark behavior in seconds. Ideal for quick diagnostics without prior experience, reducing trial-and-error and helping you confirm ignition issues faster and more confidently.
[Quickly Identify Weak Spark & Misfire Issues] Visually verify spark plug and ignition coil performance using this spark plug tester under real test conditions. Easily spot weak sparks, inconsistent ignition, or complete no-spark situations before replacing parts. This helps confirm the real cause of misfires, hard starts, or rough running, avoiding unnecessary part swaps and saving time during ignition troubleshooting. [Integrated Safety Shield for Confident Testing] Designed with a built-in prot

KZYEE Current Probe Power Circuit Probe Kit Automotive Circuit Tester with Ancel BST100 Car Battery Tester 12V

[More Powerful Code Reader] - This KZYEE vehicle scanner is an upgrade version of KM10. Upgrade 1Fuel Inject Testing, diagnose fuel injection system faults. Upgrade 2Frequency Testing, check whether the signal frequency is abnormal. Upgrade 3Duty Cycle Testing, check whether the duty cycle is abnormal. Upgrade 4Data Display Switchable, easily switch between waveform display mode and digital display mode. Upgrade 5More Signal Lines Inside, faster and more stable data transmission
[More Convenience] -- With piercing probe kit, you can easily use our KM50 PRO vehicle scaner probe tester to pinpoint the short circuit without having to pulling out multiple jumper wires and then get the component close to a power source to test them, Save your time for finding faulty connections. Also our power circuit probe allows you to check power and ground without switching leads
[High Accuracy] --- The KZYEE powerprobe code reader is fairly accurate in testing component resistance and detects fair value and polarity of diode,and the probes are sensitive enough to pick up even the smallest changes in voltage, besides, the LCD screen makes it clear and easy to read the result of diagnosis
[Car Battery Tester]] ANCEL BST100 battery load tester is capable of testing all 12V 100-2000CCA batteries, including ordinary lead acid battery, AGM flat plate battery, AGM spiral battery, Gel battery and etc. It provides a comprehensive analysis of the battery health to help you clear about the status of your battery before it runs out. The test results are based on CCA,IEC,EN,DIN,JIS,GB,SAE,MCA,BCI,CA standards
[Multifunctional] ANCEL BST100 automotive battery tester scan the battery and give accurate test results and conclusion, including battery test, cranking test and charging test. From battery conclusion, you will get suggetion for good/ok/attention/replace. You will know clearly about the test result, even you don't have any battery knowledge

KZYEE KM10 Power Current Probe Kit and 3 PCS Replacment Probe Tips Combo, 12V 24V Automotive Circuit Tester, 4 in 1 AC/DC Voltage/Diode/Resistance/Relay Tester, Short/Open Finder, Activate Component

[All-in-One Power Circuit Tester - No More Tool Switching!] Meet your ultimate electrical detective! The power scan probe kit master every test:Self-test,Auto Circuit Breaker,AC/DC Voltage,Continuity/Resistance,Signal Circuit,Activate Components,Trailer Light Test,Short Circuit Tracing,Polarity & Ground,Relay/Fuse Tests. Works flawlessly on 6V–30V systems - Cars, Trucks, Trailers, RVs, Boats and more. Our all-in-one system saves you time and hassle by replacing multiple devices - idea
[4-in-1 SUPER SCAN MODES – Diagnose 10X Faster!] The power circuit probe tackles electrical issues 10x FASTER than old-school multimeters! Half the hassle, double the speed with 4 razor-sharp diagnostic modes: DC Voltage (0.1V resolution), AC Voltage (Min/Max, duty cycle, frequency), Resistance (checks grounds & circuits), Diode (lightning-fast voltage drop + one-way flow test). The proper car probe tester keeps your vehicle running smooth and efficient. Get yours now and drive worry-free!
[Instant Component Activation – Test On the Spot] Our power-packed probe tool features a built-in power activator that lets you powers up fans, relays, lights, starters and more—right on the spot. Just flip the switch—no jumper wires, no blown fuses! Whether you're in the garage or driveway, this 12V/24V circuit tester diagnoses issues in seconds, delivers dealership-level accuracy, save cash on ECU and dodge pricey disasters. Tip: Hold the power switch to activate the component!
[Fast Fault Finder & Overload Protector] This high-precision circuit probe instantly detects short circuits, broken wires, and faulty connections with 99% accuracy. Specifically designed for trailer lighting systems and vehicle wiring, it tests voltage/polarity directly at connectors - diagnosing problems in seconds. The advanced DC Voltage mode and 8-amp circuit breaker work together to deliver professional-grade results while protecting your equipment - saving you $100+ on average repair cost
[More Game-Changing Highlights] One-handed KM10 probe teste feature high-contrast 160x128 TFT large LCD display delivers crystal-clear readings even in bright sunlight. Dual power supply — powered by your car battery or cigarette lighter. The insulated alligator clip guarantees a secure ground, while 40ft of cable offers ample reach. A built-in flashlight illuminates dark engine bays or dim spots, making it a must-have for DIYers and pros use. Comes with two probes.

2PCS Small Pointed Piercing Replacement Probes Tips Compatible with KZYEE KM50/KM601 Power Circuit Current Probe Tester, Black

2PCS Small Pointed Piercing Replacement Probes Tips Compatible with KZYEE KM50/KM601 Power Circuit Current Probe Tester, Black

KZYEE KT80 (Upgraded from KT60) Digital Timing Light with LED Strobe and KZYEE Large Carrying Case for KT60 & KT80 Ignition Timing Light

[ Upgraded Multi-Function Timing Light for Tuning ] The KT80 goes beyond basic timing lights with three essential ignition tests—Timing, Dwell, and a true 0–35V Voltage range—plus an upgraded LED strobe with up to 10× longer service life and a 60° adjustable head for precise alignment. Supports 6V/12V gasoline engines and offers flexible power for classic tuning and restoration work.
[ Dual-Power Design – Internal Battery + 12V Runtime] Unlike timing lights that rely only on battery clips, the KT80 features a rechargeable internal lithium battery for independent testing, with 12V battery clips as backup for extended sessions. USB-C fast charging keeps you working without interruption. Backup clips require a 12V battery.
[ Advanced LED Strobe – 10× Longer Life, High Stability ] The upgraded LED strobe delivers stable, flicker-free illumination with up to 10× longer lifespan than traditional xenon lights. A 60° adjustable head ensures clear timing marks even in tight or low-light engine bays. Avoid direct sunlight for best visibility.
[Protective Kit for Ignition Timing Light Tools] This EVA hard case is built as part of the KZYEE ignition timing light kit, offering secure protection for KT60 and KT80 automotive timing tools. Designed for engine tuning, RPM measurement, and spark ignition adjustments, it keeps your ignition analyzer ready for any tune-up.
[Enhances Timing Light Accuracy & Reliability] Proper storage helps preserve the calibration, connections, and cables of your timing light. The molded interior stabilizes the ignition tool, preventing wire stress, damage, or distortion during engine timing adjustments or distributor alignment work.

1PCS Small Pointed Piercing Replacement Probes Tips Compatible with KZYEE KM50/KM601 Power Circuit Current Probe Tester, Black

1PCS Small Pointed Piercing Replacement Probes Tips Compatible with KZYEE KM50/KM601 Power Circuit Current Probe Tester, Black

KZYEE FAQs

Yes, KZYEE is a legitmate brand on Amazon. After conducting a comprehensive analysis of 5,595 customer reviews for KZYEE products on Amazon, we have determined its average rating. Offering great value and satisfying quality, KZYEE has achieved a respectable rating of 4.4 from many customers, showing that its products meet customer expectations. While there may have been minor issues reported occasionally, overall, it is safe to make purchases from KZYEE on Amazon.

Amazon has strict policies and safety measures in place that ensure only legitimate sellers and products are allowed on their platform. It also provides a secure payment gateway and offers buyer protection, ensuring your transaction is safe. In the unlikely event that there's an issue with your purchase, Amazon's customer service and return policies are designed to protect your interests.

If you're interested in KZYEE and want to find more KZYEE products, you can follow the steps below:

  1. Go back to FindThisBest's homepage.
  2. Type KZYEE in the search box and hit Enter to see the search results.
  3. Find and click the correct KZYEE to go to the new page.
  4. Select the products you want in the KZYEE buying guide, and take a glance at the prices and features of the products.
  5. View the products interest you on Amazon to read the customer reviews and check the ratings. Besides, you can hit the "brand" to find more KZYEE products.

We analyze millions of KZYEE products reviews and customer reviews to recommend the best picks for most consumers. We have a professional team with decades of experience to test the products, which can help ensure that we provide our readers with accurate advice and best recommendations.

There are usually 5 to 10 products in a brand buying guide. We found 27 KZYEE products for sale, 20 of which were analyzed in detail and recommended to customers.

  1. Go to the KZYEE page.
  2. Select the product you want in the KZYEE buying guide, and then view the product on Amazon. For example, if you are interested in the top 1 product KZYEE KM10 Power Circuit Probe Kit, 12V 24V Automo..., you can view it on Amazon page.
  3. Place your order on Amazon.

Our mission is to provide you with the most up-to-date and objective information about the KZYEE products, helping you make more informed buying decisions. We recommend best choices of the products from the KZYEE brand, helping you make better shopping choices with less time and energy.