nice sentence , that made my brain hurt lol. i have put on MANY new alternators with old regulators and never had an issue. the regulator is supposed to be grounded.
(and grounded good) I put a new (electronic) regulator on and it wasn't grounded good enough. It boiled the battery and blew almost every light bulb out in the car as well as the amp meter. The battery boiled so bad it splattered acid on my drivers valve cover and Leanna had a heck of a time getting powder coat to stick when she did my valve covers. LOL tmm