alternator problem

dustya_383 said

So can I leave the original regulator on and just run a wire from the other field terminal to ground?

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Yep, that's all you have to do to get the system up and running fine (assuming your voltage regulator is good). If you need a replacement voltage regulator and don't want to alter the wiring, get a Standard VR-128 or a NAPA Echlin VR-1001.