64 Dart Rewire

The Mopar regulators are the simplest on the planet. There are only two styles. The one you have, up through 69, uses one field terminal grounded. The 70 needs one more wire to work. It feeds power to one brush (must have isolated field or two insulated brushes) and one wire back to regulator plus VR power GM and Ford were never so simple. All he is doing there is using part of the hardware in the VR