Hey guys, somehow my reverse lights stopped working. I crawled under and found that the power wire on my lights is disconnected. i dont have my reverse lights in my taillights, they are round lights under the bumper. Which wire gets power when you put the truck in reverse? im trying to figure this out, so i can re-connect my reverse lights to this.
thanks.

 

At the tailights it should be a purple wire with a black tracer according to the 91 FSM. I run a relay if I have bigger lights than the stock ones, I'm not sure how much amperage the BU light switch will take. Good luck