In this car, the electrical genius who owned the car before me did all sorts of creative things.
One of his big ideas was that he ran a whole new thicker power wire from the alternators' output post, through the firewall to the ammeter, then back to the starter relay by the battery. So the alternator main wire going through the firewall connector appears to be bypassed. He did include a fusible link in the wire next to the starter relay, and that link is a thin purple wire, so I'm sure it would blow if it had a problem. One of the field wires on the alternator was the wire that got smoked the other day. The field wires were in the original wiring harness.
I'm planning to keep that power wire setup as it is for now, to keep excess power from flowing through the 52 year old firewall connector. Anyone have ideas about this?
When I was at Lowe's yesterday, among other things, I picked up an automotive fire extinguisher to keep in the car.