my trucks' reverse lights are dead dead dead. i've tried replacing bulbs and the unit they plug in to. i've checked fuses. i've tried to check the wiring for damage as best as i could.....still nothing. i'm not real sure what triggers the reverse light to come on, but i don't believe it is that either because the bulbs quit working at different times. all of my other running and brake lights in the unit work fine.....any other ideas at all? i'm fresh out and have just been dealing with no back up lights for a while now.