Managed to spend an hour today. Main fuse box finished now. New lock nuts picked up and tightened down, all back in place now. This is how the fusebox looks with the 80A fuse in position 7 with the new wire. Should be good.
Just for the fun of it, the wreck has been stripped of a few wires and now looks like this:

Should still have most, if not all, wires to get the V8 started in there.
I mentioned before that it looked like there was something dripping on the car, leaving marks on the driveway. Put some cardboard underneath to have a clean surface to look at. Obviously a coolant leak:
I will need to stick my head in there a bit further to see where it actually comes from. You can see a drop in the picture, but it could come from some higher point.