I want to use the wiring harness from the donor vehicle. (1989 chevy truck) I have the computer and the harness but it turns out i have no idea what I am doing. I have some skills but this might be just a little to much. I can get an aftermarket harness just for the engine for $400.00 bucks but would rather spend that somewhere else. Does anyone have experiance with this type situation. If yes al help is appreciated. By the way 700 4R trans also.
