Originally Posted by RapidRobert
unplugging the reg should elim all charging. OE electromechanical reg? EDIT I'm thinking (likely) reg or alt internal issue


70 would be electronic.

How much is it overcharging ? Any current or voltage measurements ?? He's going to have to get familiar with a voltmeter and start with some readings. Might get lucky with throwing parts at it or maybe not twocents beer