Diagnosing high voltage

67Dart273 said

Then it HAS to be that the green wire is shorted (to ground) OR there is a problem in the alternator.

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I removed the green wire from the alternator and it’s still charging, so there must be an internal problem with the alternator.

I guess I’ll be returning a brand new alternator.

I checked the brushes at the time of purchase and the was no continuity to ground on either brush.

Must be some other possible internal problem with the alternator?