Delco Remy 881-12v volt reg help!

So the a/c in my 1970 Monte hasn’t worked since I bought her,however,everything should work if properly connected. The only issue I’m having is this regulator. If I hook power straight to the fan motor it runs just fine,but obviously I can’t just leave it like that. Mind you,this might also be a wiring issue,old and dry,maybe broken and I just don’t see where. However,this volt reg looks like it’s seen better days. I wanted to know if anyone has a wiring diagram for it so I can make sure it’s not just operator error and the wires are switched,or anything helpful in general is always welcome.