'71 Duster 340 Battery getting overcharged

Concur, Thank you 67Dart273...just getting my coffee and out the door after a quick read, plan to digest your info later today and post a couple pictures of what I have. Can you shed some light on how a voltage regulator does what it does? It appears both field wires from the alternator hook directly to the voltage regulator with no other input...just curious. Also plan to remove the voltage regulator I have and clean it up good as I thought perhaps it is grounded to the firewall--am I wasting my time??? I suspected the auto zone "guru" wasn't such a "guru" when he told me it was a direct replacement and I could leave the other field wire off with no problem.