It's a good question, Earl, but eeeeaaayyyaachhhh I couldn't really give you a straight answer so I'd have to say the colours are what they are. Sort of based on the wiring I pulled out, so I use black for earth/ground throughout. Seems sensible therefore for battery +ve to be red to the fuse box/ignition switch. Thereafter used red/white or red/sommat else for feed from there to lights or whatever. Sometimes probably same as what I pulled out but also what came to hand among the assorted flavours of tracer wires I had bought.
Mention of which, if you want to do any wiring yourself even adapting a harness you ought to have some basic tools and supplies. A good snipper to cut wires, wire stripper, crimping tool if yer going down that route, connectors, loads of types are available, harness tape, heat shrink, scissors, a multimeter is well handy. Bits n bobs.
