Need some engine buildup help

May I suggest as the others and recommend getting the wiring figured out. It sounds like youve got a rats nest in your harnesses. One of the things I found very useful is to get the service manual for the vehicle. It will have the wiring diagrams and lots of other useful information on the car, stuff like interior and exterior body parts diagrams and tons of other info. you can try and patch the wiring with what youve got. Get the wiring figured out, the rest will take care of itself as things progress.