Today after the grind, I put the side marker lights in and a couple wire repairs later they work.
Put bulbs in the backup lights and they worked so I put the new lenses covers on,
Adjusted the E-brake and it works.
put a fuse in for the emergency flashers and they work.
The only thing left is the license plate light, there is power there but the socket with the spring loaded contact assembly is shot, I just ordered a new one. When it shows up, its the last repair that needs to be done to get the light and brake inspection to finish the registration.
Recap of repairs so far: restored mechanical fan and got rid of the broken electric one, all new lenses except tail lights, fuses, lots of bulbs, new turn signal switch in the steering column and some wiring repairs. After the registration is completed, I plan to buy some retro look 20" wheels and tires for it and call it good until I put the little Cummins in it. I have the Cummins B3.3 that needs freshening and locate an build a 4l80E with a stand alone controller. It runs and drives fine for now, I will leave it in patina until I do the engine swap then pretty it up.