Please help Me.."Overcharging"?

you popped the regulator get a bigger 1 the old wire sytems are wired for 35 amps
tell them you want a 65 or 85 amp regulator and youll be good if you freid anything check your fusable link or change it out anyways its 50 years old

No freekin idea what you are talking about

1---He has a 70/ later system which is already the isolated field, later regulator

2--He already has a larger alternator

3--It ain't 50 years old.

4--There is no such thing as a "65 or 85 amp regulator"