Modern electronics = Full rewire

Thank you for the notes. It has been helpful in trying to identify all the random parts. Finally finished up my wiring diagram but trying to figure out what type of wire to use and guages for everything.

I am thinking:

14ga primary for most stuff
18ga primary for relay coils
10ga TXL for the ignition relay switches
When I redo the engine compartment wiring for looks I'll be using TXL only I think.

Going to use a Bussmann RTMR 5 relay and 10 fuse block and maybe have the Other Lighting Relay be standalone.

The wiring in the drawings is what was ruined and needed replaced. From the bulkhead connector to the printed circuit board, the main harness wires are insulation welded into one cable with bare conductors poking out. Didn't attach the wiper wiring diagram because it is stand alone and fairly straight forward. I am currently reusing the AC/Heater wiring, rear harness, most of the engine compartment, and the interior lighting circuits because they were all stand alone and not damaged. I have the new wires sorted into smaller bundles for each major component.

I am also trying to find the terminal posts and pins to repair the printed circuit board, one post broke when removing the plug and several are loose. That and I would like to replace all the wiring and not splice onto the current pin. If I can't get regular post was thinking maybe a tiny screw and nut then put ring terminals on.

Any comments or suggestions would be appreciated because I plan on putting these in plugs with wire loom and heat shrink to hold the loom in place. Would be terrible to redo.