On the surface the bike was scruffy, but as I tore into it I realized that it had never really been abused and the guts and internals were actually in pretty durn good condition!

Gotta love GOOD surprises!
The wiring, for all of its crap-appearances, was actually in good condition inside, and the connections (typical japanese bullet-receptor) was quite nicely done. In the end, the harness got put on a weight-reduction program, pulling a lot of un-necessary and redundant wires, but using the basic system that was built thirty some years ago.