67Dart273 said

I may not BE the voltage regulator.

So let's start with "what are we working on?"

1928 Farmall hemi?



I mean, I'm just guessing here.....................

IF THIS IS a 70 or later vehicle you need to first check the field situation. If so, you should have two field terminals. NEITHER should show continuity to ground

IF that is OK, you may have a poor ground to the regulator or low voltage from the key going to the IGN terminal of same

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