I cant answer your question directly, but scan utube for GM light switch troubleshooting. I pulled up a couple of those videos and they identified each terminal and function of the switch. I was able to fix and test my switches. It might help.


~ HB
1966 Chevrolet K-10 | Ghost: formerly Flappy Fenders | In the Stovebolt Gallery
1962 Chevrolet C10
1962 Suburban