As a disclaimer, I have a little electronics knowledge, but I'm no expert. I've been given an old 1940's Hunter fan and I'm working on fixing it up. I took the base apart and wiring is pretty bad - cracked and bare in places... I'm going to replace it, but I'd like to understand what is going on -- how the variable speed works.
I've drawn a crappy diagram based on the wiring I see -- can anyone explain it?