What Would Cause an Alternator/Voltage Regulator to Fail Twice?

[Erik]

Well, stuff just gets more interesting. I had a meet to go to, 10 minutes away from the house, and as the corvette was drivable, I gave it a full charge last night and headed out this morning. Dammit, if the gauge wasn?t showing it was charming as normal, and the battery light was off. Wtf?

So my first thought is, perhaps my first alternator didn?t fail. Maybe when they were working o]under the plenum, they disturbed some wiring or something, and that caused the issue. Replace alternator with new one, wiring gets messed with again, works for a while and then disconnects again.

So what would cause this scenario? Car runs fine. Drives well off the battery, but alternator doesn?t charge. I?ve seen some comments about the alternator pigtail getting wonky. Negative battery cable? Any other thoughts?