I had the same question with my ‘52 chevy 3100. It wasn’t hooked up on my truck. I ohm'd it out and when the ignition is switched on (and it’s only a two position switch, off/on) both terminals are powered. I suppose the accessory terminal is for a lighter or maybe the radio.


Phil
Moderator, The Engine Shop, Interiors and Project Journals

1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube
Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc Brakes
Project Journals
Stovebolt Gallery Forum