Alternator Fuse blowing above 3000 RPM

I'm dealing with a similar issue in a 97 gt. My charging system quit while driving. I thought it was the alternator because the belt had been slipping. I put a reman on and it did no good.

Then I heard about the alternator fuse. That little alternator fuse had blown. Replaced it and things seemed right.

I was driving the next day or two with the air and radio on and lost charging again. But there was a much bigger event this time; the engine stalled for several seconds and then came back to life while coasting. I ran on battery power about 10 miles home.

This time I found that the alternator charging cable had grounded to the alternator bracket, which may have caused the fuse to blow the first time. A hole had been rubbed through the alternator boot allowing the cable connector to ground out. At the same time, my fusible links were burned out from the short.

This event destroyed my alternator. The internal connectors from the rotor to the slip rings erupted and the insulator blew up.

I've now installed a new alternator and new 4 gauge power wires with a 200 amp fuse from the alternator to the power block. And have added new 4 gauge ground wires from the alternator bracket to the engine to a factory ground point. The battery is about 6 years old, fully charged, and tests good.

I've cranked and idled/revved for some time in the garage and things seem to be working correctly. I haven't had a chance to drive at length but will update if not solved.