Well, time to revisit this. Seems that it took me 5 months to finally get the time to complete this.
So, after the 4 day holiday, putting in 8-10 solid hours per day under the bonnet, I have a new central nervous system in my p-car!
Initially equipment:
That is Fred Cook's fuse panel, with the extra headlight relays and an extra relay on the left side that kills the fuel pump remotely (I was having hot start issues with the Megasquirt...). The fuse panel, though build better than stock, was still having problems with meltdowns from various poor electrical loads. I wanted something more stable.
Step #1: Kill the patient
Here is what is behind the fuse panel, for anyone who is not brave enough to do something this stupid to their car
Panel removed, all incoming wires pushed out of the way.
Step #2: Clean up the crime scene
Factory harness sequestered based on my future connecting scheme. The bundle heading to the front of the car is the front lights (headlights, turn signals, etc), the condenser motor wiring and the wiper washer squirter motor.