Best Car Flashers of 2025

"I installed this in my 1984 motorhome and it worked well, even with the reversed polarity issue. I just switched the leads behind the fuse panel. The ground lead was a bit short, so I extended it. The flashing speed is about 60% faster than stock but not a problem. It functions well with both LEDs and incandescent bulbs, producing that satisfying relay click. Great value if it lasts!"

"After switching to LED lights on my 1968 Plymouth Roadrunner, I found that the new 2-prong flasher didn't light up at first. However, after reversing the polarity, everything worked perfectly. I deducted one star because the need for polarity reversal wasn't clear to me initially. Overall, I'm satisfied with the performance!"

"I needed a flasher that I could hear since my turn indicators don’t turn off automatically. This one is fantastic and works seamlessly with LEDs. Just remember to connect the attached wire to a ground!"

"I have a 1977 Chevy Van G20. When my directional signal light fuse relay failed, I found this replacement online. It was super easy to install—just unplug the old one and plug in the new one. My directional lights are now working great!"

"I switched my 91 Jeep to LED turn and side marker lights and needed an updated flasher relay. This one works great!"

"I replaced the turn signals with LEDs on my 2007 Silverado and needed this relay to make them function properly. It fit well, and my turn signals are working as they should!"

"I replaced the turn signal flasher unit on my Honda for about half the cost. The adjustable flash speed is a great feature, and it feels well-made. I would definitely recommend it!"

"I installed this flasher on my 2010 Crown Victoria to fix the hyper flashing problem after switching to LED turn signals. It worked where others failed, and the stock speed was just fine for me. For installation, I suggest using the wiring harness for better access to the connections."

"After my wife's Sportster turn signals stopped blinking, I followed a YouTube recommendation and installed this flasher. I did notice that I couldn't get both turn signals to sync at the same speed, but honestly, you wouldn't notice unless both were on at once."

"My husband mentioned that on his classic car, rainwater gets into the fuse box and causes the relay to short out. He bought a few of these as backups, and they fit perfectly and work great at a reasonable price."

"This blinker box is excellent for my Dodge and works on just about any vehicle. I'm very satisfied with its performance."

"After both my relays failed when I left the vent window open, I was able to get my turn signals and flasher working again in just five minutes!"

"As an electrical engineer, I've dissected many relays over my 40+ years. I found these to be well-made with real copper coil windings and heavy gauge contacts. They are completely sealed and built to last, making them a great choice for marine, auto, or truck repairs. The 2-year warranty adds extra value."

"I used these relays to create a new relay bank for a poorly designed Ford product that had a recall. They saved me a lot of money and work perfectly for my needs."

"I replaced a burned-out flasher on my DLX with this relay. It connected easily and seems solidly built. I'm optimistic about its longevity compared to the original."

"I find that these relays work well with LED lights for my turn signals and hazards. They are also silent, which is a nice feature. So far, they function as expected."

"I experienced a serious problem with one of these flashers. When I applied power, it exploded, which could have caused a fire. I've used various flashers without any issues, so this was surprising. I do not recommend this flasher, but if you do decide to buy it, be sure to test it first."

"I had to cross the wires for it to work on my '69 Mustang. The LED flasher relay doesn't function properly unless the load and hot wires are connected correctly. I suspect other older cars with L-shaped connectors might also face this issue. If it doesn't work initially, I suggest trying to cross the wires."

"I installed this on my 2020 Grom SF after switching to LED directionals and taillights. It worked perfectly to prevent hyper flash and is still functioning well a year later. I would definitely recommend it."

"After receiving this LED flasher, I reconsidered installing new LED lights on my truck. It seems like a quality product, but it didn't suit my needs for upgraded headlights."

"This flasher works great with my halogen bulbs. I really appreciate the loud click when using the signals, especially for my loud truck."

"I installed this on my 1990 Ford F-150 and it worked perfectly. The turn signal issue was resolved easily with a simple plug-in installation."

"After upgrading to LED turn signals on my YJ, this flasher got them functioning, but I noticed it has a faster flash than I prefer and is a bit loud."

"These are the real deal. I use flashers on my tractor while mowing along a highway. Unlike other flashers that would quit after a short time, these have a nice rhythmic flash and are still working after quite a while."

"I had my original flashers and hazard relays upgraded to 6 bulb max relays. They support both original and LEDs. Amazing for the price! I recommend getting it now."

"This flasher works with incandescent bulbs or a mix of incandescent and LED bulbs. However, it won't function properly with only LEDs. After trying these units with my car's four 1157 bulbs, I found they worked well with the incandescent bulbs. But when I switched all to LEDs, they didn't operate correctly due to low circuit resistance. I ended up using different electronic flashers that worked properly. I rated these two stars because they don't work as advertised, but I appreciate the good return policy."

"I found this product to be a direct fit, and it was easy to install. After using it for about two weeks, it works great. I did notice that in cooler temperatures, it needs a bit of warm-up time before the lights start blinking, which takes about five seconds. However, when the temperature is above 70 degrees, there are no issues at all."

"I installed this on my 2009 fz6r raven while upgrading to an integrated tail signal. It fits perfectly and works as expected. The installation was straightforward, and the quality is much better than what I had before. I’d say it’s a great value for the price, definitely a 10/10 for me."

"These lights are fantastic! They are very bright and the price is just right. I had no trouble installing them at all, making the whole experience smooth and easy."