My electronic flasher circuit controls brake lights also, so I'll have it hot. The alternator is a three wire. I think I've seen the article, thanks for linking it.

All the schematics I've looked at show the field winding (sense lead) hot, along with the indicator lamp, but I don't see the harm in putting them on the acc. Circuit.

I've got everything coming through the firewall landed on terminal strips, so next I'll be wiring in relays. I'm definitely thinking to put a relay between the start solenoid and the switch. Should make the ignition switch last indefinitely.