I need help finding the wire that goes to the pin on the manifold near distributor...

Follow the wire and see which cavity it leads to at bulkhead connector.
Sorry but you gotta do some of the legwork AND get factory schematics. It's a 48 year old vehicle, either get them or sell the car, OR find a mopar mechanic close to you.
Schematics are FREE chk Mymopar.com for them.
Sorry for sounding like an ***, but for the inexperienced there is a big learning curve. Some can be done over the net, but some are best done hands on.
Good luck