So I am basically rebuilding my 1991 Ford and F250. I removed the body wiring harness that runs from the ECM all the way down the frame to the fuel tank/sending unit and tail lights I believe it also connects to the transmission (C6 automatic). The engine is a 351w fuel injected it's 4x4 sitting on a f350 frame.
Any help finding this harness or ideas will be greatly appreciated.

Thanks
Chad, Florida