69 Dart - overcharging issues

My 2 cents. Forget it all and get a 1 wire, 100 amp unit.

And for those that have an unmodified bulkhead / ammeter circuit this is a SURE way to just "finish off" the harness into a Great Big Melted Pile o' Goo

Further, the problem might BE the wiring in the first place.

"Throwing ****" at a problem is not the answer