I just put a "Brightasslight" LED taillight on my ride (sorry mod's that's the name of company). Man it's a great thing, if a driver behind you can't see it they are blind. There is over 21 different patterns you can set on the light. I set it to flash 3 times twice (flash is very fast) and then go steady. Very easy to install, remore 2 screws, unplug light, plug in new light and put the 2 screws back in. You set the light patterns with a magnet (they give you) tapping on the light in one area and holding the brake on. BTW, this is the same light they use for the Police Bikes.