Beacon Brake, Tail, Turn Light Assembly (universal bike rack mount)Safety is #1 and this universal bike mount brake, tail, and turn signal unit makes sure the people behind you know what you are doing when your bikes block your OEM tail lights. We've been running this assembly on your personal vehicles for the last couple years so we know these will hold up to all sorts of abuse. Using a standard 4pin trailer light harness this light is more versatile than you can image. Mount to the bike down tube, front shock, seat