Man, I would never have thought about that high-tech solution. This reminds me of what a guy said over on the JeepForum. He said "I never intended to become a Jeep guy". I replied " Silly- no one intends to become a JEEP guy- owning a Jeep MAKES you become a Jeep guy".they unplug and plug it back in to see if that cures the issue,
I think jeeps suck. But you knew that.
It is working now so I think the wiring is the problem. If twisting the external wiring doesn't affect it then it is possible the internal wiring is faulty. The connector plug wiring inside the case can get loose/cruddy and if you open it you can re-solder it for an easy fix. The "BATT" terminals on all brands are famous for breaking inside when people over-tighten the nut and twist the stud. Then the wire inside gets stressed or breaks.
Or, just buy a new alternator?
GBodyForum is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com. Amazon, the Amazon logo, AmazonSupply, and the AmazonSupply logo are trademarks of Amazon.com, Inc. or its affiliates.