Back-up lights: Should only come when tranny is in rev. I wired mine through a relay. The relay coil, (pins 85 & 86 on all 12volt relays meausring about 1" square) I allways use pin 85 for gnd,(my preference) the other pin (86)is wired to a aftermarket fuse block, with a 2a fuse, (coil doesn't use much current)the other side of the fuse is then connected to a wire that I ran to the rear of the truck and spliced into the backup light wire (driverside, had to remove the lame assembly to do it) So, now when I shift into reverse, the relay coil get's energized. My back up lights are then wired to the NO pin and the common pin. The common pin is #30, the NO (normally open) is #87. Power for the lamps is taken from (in my case a terminal block & fuse panel) from my fuse panel (+12dc) is fed to pin #30(common)pin #30 is wired to the lamps. Had to run that wire as well. When in rev. the coil closes the contact between Pin 30 and pin 87, sending juice to the lamps. Totally separate from truck circuit.
Same thing can be done for driving lights, but instead of using the back up lights to supply power (duh) you can tap into the driving lights.
CB can be wired directly to the battery, with an inline fuse added.
As far as which colored wires to use, I can't help ya there. I had to take some s#$%
apart to locate the proper wires. I do have the tech manual, and yes I have schematis available, but most of the wires I neede to find were/are buried in wire looms. It was easier for me to just remove the lamp assemblies.
My 3cents worth.
Good luck
Troy