Relay and backup light
I ran two utility (rubber housing) lights on the back of my truck. I ran a ten guage wire back there for power as on the 87 and other early trucks, the wiring is very small, not heavy enough to power my two 55W lights. Anyway, I have the relay wired to toggle on when the transmission is shifted into reverse and have a manual switch. I used a 5 wire relay. I can turn my lights on running down the road if I so desire and it is a great tool to back tailgaters off your a$$! I mounted mine up under the truck so they would be out of harms way. Works great. I can get a wiring diagram together I am sure if someone wants it. I am new here and haven't figured out how to do pictures and stuff, but love the way you guys insert them right into your posts.