Charging system

Save yourself trouble and go to classiccarwiring.com and buy your cars full color wiring diagram.

Also @Mattax has access to electronic wiring diagrams that can isolate separate systems.

In a nut shell.

Starting run cir.

Ignition key has 2 positions and 3 outputs.

IGN 1 is Run and it powers the ballast resister which then powers the coil


IGN 2 is the Start cir, it bypasses the ballast resister to provide full battery voltage to the coil during cranking of start.

S terminal is the power to the starter relay to energies the relay to crank the engine


IGN 1 and IGN 2 are never on at the same time.

ACC powers some circuits, radio, wipers, turn signals and heater, and is powered when the key is in ACC or Run

IGN 1 also powers the alternator field and electric choke

I applaud your trying to understand each cir.

As for the charging cir yes, alt output to alt guage to battery.