Reply to "Questions: Indicator Lights and 3G Alt wiring!"

Noticing a similar belt squeal problem with a 3G installation.
It has the internal regulator and is wired to use the dash indicator lamp. The yellow sensing wire goes to the battery cable stud on the starter relay and I added a 6 ga cable from the alternator output stud to the same stud on the relay as the yellow sensing wire.
Belt just howls until battery drawdown from starting is recharged, then it's ok. Like Mike suggested, I removed the wiring from the alternator so it was just acting as an idler pulley and no squeal at all.
Amp gauge has been replaced with a voltmeter so I cannot tell what the amp load is, but voltmeter shows about 14v at idle.
The 3G came with a serpentine pulley installed. I had initially tried a reduced diameter vee pulley, about a 1/2" smaller in diameter than stock. I figured that would pick up alternator RPM lost to the smaller Pantera crank pulley. The squeal was instant and wouldn't stop. Took the alternator to get it checked out. It tested fine on my guys machine with a 180 degree belt wrap, but he suspected the squeal problem was the combination of the reduced pulley diameter and the maybe 100 degree belt wrap on the car. He recommended trying a larger pulley.
I removed the stock sized pulley from the original alternator. It was a little rusty so I sandblasted it, making sure I got the glaze off the vee area the belt rides in. Before I painted it I masked off the v to keep the paint off that area so as to maintain as much tooth for the belt as possible.
Putting that back into the car got me where I am now, a few seconds of squeal then good. But the duration of the squeal is proportional to the cranking battery drawdown. After an extended cranking period the squeal is extended.
I'm going to find an even larger pulley and try that next.