Posted by Steve@Advance on December 30, 2016 at 16:32:01 from (107.203.134.67):
In Reply to: Alternator problem posted by BigDanT on December 30, 2016 at 06:23:45:
This sounds like you have gotten a couple of bad alternators.
I can see nothing wrong with your wiring.
I have never tried disconnecting the #2 wire, but I would think that would increase the voltage, not lower it.
There is a D shaped hole on the back of the alternator where you test the regulator by grounding the tab inside to the case.
Something you might try, with it running, carefully insert the volt meter probe into the D shaped hole in the back of the alternator without touching the case. If you do not get a reading, or the tab shows continuity to ground, the field is shorted to ground, the regulator is improperly installed, or the regulator is shorted internally to ground.
It would not be uncommon for several alternators to have been assembled wrong or have defective regulators. Even though they said they tested it, the test is only as good as the "technician" reading the test.
Do you have another vehicle with the same alternator you could try?
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