Voltage regulator overcharging

That's so irrelevant.
If he needs to buy anything, he'll need a terminal release tool, a good crimper, and whatever type terminals are in that connector.

If its just some heavy oxidation, might get away with a good cleaning.
Here's a good list of different types of terminals & connectors.
Our Mopars mostly use a variation of the Packard 56 type.
Automotive Electrical Connectors
Some other types were used too. We'll know soon enough what this connector has.

Aftermarket Packard 56 style female terminal on left. Typical Chrysler type on right.
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IMG_9160.JPG
Middle is similar aftermarket to Chrysler type, but not quite same.