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I'm trying to put a set of backup lights on my 350. These are for backing up the trailers at night as it gets dark so early now. Where do I tie in and to which breaker.
Bill you shouldn't hijack a thread!! But since you did already. Run a wire from the battery positive all the way back 10 ga is what I would use, Wire up a relay that ties into existing reverse lights to switch on the relay, wire your halogen 100 watters to the relay. Or you could run a two wire disconnect and put the aux back ups right on the trailer which is the way to go!! If you go that route still wire up the relay and run the two wire disconnect to the trailer when towing and when not towing plug it into a set of back up lights on the truck itself. I wired mine on a switch if someone is tailgating a quick flash confuses them and they back off!!(don't have it pointed up high you don't want to blind them!!)