[piecesparts]

You should only have to run one wire from the engine compartment to the rear of the truck. Use a quality wire and size it, so that you don't overload it. I would suggest at least a 14 gauge wire, I personally would use a 12 gauge, but I am a tad bit overconcious when I do things like this. I personally would also use wiring protection like a convuluted wire loom. Take the wire along the inside of the frame to the front of the firewall and feed it into the cab (good idea to put a rubber grommet around the wire at the hole in the firewall) and to the point where you will have your switch for the lights. At that point cut the wire and connect to the switch. Now you will have to feed another wire to a power source, preferrably to the battery positive post, so that you do not ovverload some other circuit in your truck. Before connecting to the battery post or terminal close to the battery put an in-line fuse into the circuit close to the battery. This way you have protection, in case the wiring or lights go to ground and that way you do not burn up the whole wire and possibly the truck. The size of the fuse should be large enough to handle the lights and not too large to allow for melting of the wire in cse somehting happens.

The lights on the back of the truck should ground to the frame for the negative part of the circuit. Ensure that you have a good clean spot for the bolt or ground wire to connect to. I would go behind the bumper and find a spot to clean off and mount a bolt through the frame.