the key switch on the dash is where power to the coil comes from .... the hot wire from the alternator goes to the ammeter and from there to the battery

after 60 years of previous owners, there's no telling what you find was for, if anything - study the factory wiring diagram to determine how things should have been and should be now

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics