Alt replacement

Changing to the dual field alternator is a no brained swap! It could be as easy as just grounding the 2nd field terminal to the alternator case and just running it that way! You could also step up and add the 2nd field wire, run it back to the VR and splice it into the blue wire, get a new style plug from a junk 72 and up harness and swap to the new style VR! All told, that swap would take less than an hour, and the new style VR is a great upgrade!