Voltage regulator upgrade? Keep frying voltage regulators with swap

Frankly I'm skeptical that any of the links you posted above are any better than what you have now. I'm not sayin "they ain't" I'm just saying I'm skeptical

If I were you I'd yank that alternator, pull it apart far enough or at least get some good clear photos so that we can tell visually once and for all if it's internal or external regulator. If it's external, then the ohmeter reading you posted IS a problem.

I would also VERIFY that you are showing a reading to ground before you pull the alternator or disturb it much. It's always possible there's a piece "of something" down in there, even a screw, etc. The last thing you want is to get that thing off there, bump the problem out of the way and then not know???? what caused it.

The thing is, there's simply such "a pile" of new stuff that's come out in the last few years, I have not kept up nor do I have docs on any of it.