What type of alternator is this on my 40 Ford.

[Gene1949]

Gee wizz guys, give the man a break. Nobody really cares who is the better “purist”. He asked a simple question.. Anyways,
I would wire it correctly according to GM. The 1 wire does work but you will be a lot happier with the idoit light and sensing wire setup. Lot better performance at low RPMs like our flatties run. Also install the smallest pully you can find. That also helps at low rpms.

https://www.sbmar.com/uncategorized/...yIVEEg2JSz1z1U