Full Re-Wiring Job - Help, Ideas & Sources needed.

As said VG info. keep the same "colors/colors with tracers" as OE. some circuits you wanna go larger. I prefer to crimp & solder. I set the harness on the floor & built a new harness right next to it & added one wire to the new one as I cut the wire off of the old one till the new one takes shape & the old one dissappears & the board tip is excellent. Also confirm the ground paths (wires & metal to metal contact), have good continuity. It will be a HUGE job but when done you'll be glad for your dedication/precision.