Hey no1dc1983 and all others who helped on this set of problems: Just wanted to say I benefited from this dialogue also.
I am working on solving my electrical problems also that pertain to (probably) a faulty external voltage regulator. (I have one on order that I think will fix my problem.) First I found contacts inside the voltage regulator that were arced-over. I filed those smooth which fixed part of my problem, but not all my problems. I then noticed a small, fine wire going to, I believe, the field coil was badly frayed... like it had been fried or worn out.
I have a new voltage regulator on order that, I'm pretty sure, will fix my problem
But, I agree, external voltage regulators seem troublesome and also 30 year old wiring has its problems. I am also experiencing some problems with my rear lights, but I can get them to work OK for now. I am planning on installing at least a new rear harness some time soon... I spliced several wires already and have found many of them to be very, very hardened and corroded even when covered by the insulation on the wires! Grounds are no doubt a big issue.
Glad to hear you got your car sorted out no1dc1983... sounds like a 10 year old nightmare.
Thanks davidpozzi, bonecrusher, and everyone else out there.