Brake light blinker, four flashes then solid. Safety Flash Light Alert. Universal

This flasher was easy to install and custom program as explained in the provided instruction sheet. The hardest part is getting a good wiring diagram for your car to identify the necessary connections. With a little planning you can position this device in an area that can be accessed without having to disassemble the rear deck of your car so you can reprogram or bypass this flasher in the future. I preferred the 4 quick flashes then solid. That seems to alert the person following you that you have hit the brakes. I only connected this to my 3rd brake light on the rear deck of my car.

Quick and easy to install. It flashes for 4 times, then solid. Exactly what I wanted. Using it on a regular bulb and not an LED.

Works perfectly. The setting procedure for how quick the flashes are is a bit annoying, but luckily only needs to be done once.I wanted my install to be a bit cleaner and easily removable so I cut and trimmed the wires of the unit into a mini harness with two deutsch connectors. Then, I modified my car's third brake light wiring with two deutsch connectors that mate to the flash unit. That way, I can easily remove it if I ever need to. The unit is very small, and easy to tuck out of the way somewhere. The connectors I used are bigger than the unit itself.Unsolicited advice: please only use this on your third brake light. Tail light stop lamps should not flicker or blink when applying the brakes. It is very confusing to other drivers because they won't be able to distinguish between brake application or turn signal when you apply brakes and turn your indicator on at the same time.

I used this for my 3rd brake light along with an LED bulb to really increase visibility in winter conditions. Works great. this kit includes everything you will need to do the job as long as you have basic hand tools. 10/10 installation process.

not much effort to install. The hardest part was figuring which was the hot side of the circuit. A quick snip/strip/solder of that wire, and the job was done. Be sure to connect the yellow wire of the flasher module to the UPSTREAM side of the hot wire, and the red on the downstream side. Otherwise it won’t work.The trick is also to make your flash noticeable without being annoying in traffic. The default slow flash (4 flashes per second, then solid) seems to do the trick. Other rates are possible by configuring the remaining wires according to the instructions.Although federal law says it is illegal to have a flashing brake light, California allows it as long as it flashes no more than 4 times in 4 seconds.I saw this in action a few weeks ago on a car in front of me and was amazed at how effective it is, so I ordered one. For $15, this is great insurance against inattentive drivers behind you.March 2021, changed to 1 star: failure happened after about a week, where it would flash constantly while the brake was applied (would not go solid). Then, when the module was removed for testing with a 9V battery, it wouldn’t work at all. Sent it back. Haven’t decided if I should even bother with a second try.

I installed one of these in another car a couple years ago and was impressed, it's compact, feels well built, easy to install and it does the job. I thought I was getting the same thing this time but it turns out this is the cheaper version that only has an adjustment for flash speed, the other costs a little more but let you customize other things like the number of flashes before it goes solid and the behavior while solid. If you want a no frills device that gives you four flashes before going solid this work but I think the extra versatility is worth spending a bit more. It would be nice if it included printed instructions but there is a web link on the package that works. It does include the crimp connectors you will need to neatly install it which I found to be a nice touch. If you have one of the brake lights like I do that uses a single 21W bulb I recommend putting an LED bulb in there as the noticeable delay of an incandescent filament turning on and off makes the flashing a lot less crisp. The LED snaps on and off instantaneously which I find more attention grabbing.

Works great, this unit adds just enough to make your 3rd brake light more attention-getting without being over the top. I like the simple 3 flashes compared to the crazy flash patterns on some other brake flashers. There are 3 speeds available. I used the slowest pattern because it has a longer duration of flashing, seems more likely that another driver will notice it this way IMO.Installation is easy, the only hard part was figuring out which wire was positive / ground inside the car. I'm only a beginner with basic electronics and was able to figure out the wiring. I could install another one of these in 1/4 the time now that I've done it once. Don't be intimidated by all the wires, it's actually very straightforward.To get the most out of the flasher, I'd highly recommend upgrading your brake light to LED if you currently have an incandescent light. The LED turns on / off instantly, which complements the flashing effect very well.