I don't know that a one wire description is accurate, but try this link.

https://images.app.goo.gl/oTyQWcCajm5WyUzS6

This is what I used to upgrade my car and yes, the voltage regulator can be removed. I installed a smaller main fuse than what the illustration shows. I would also recommend a type GXL wire with good crimp connections that can be bought in various lengths from places like Wirebarn to go from the alternator back to the solenoid and battery. The insulation on the welding cable that some folks use is not rated for the under hood heat.
My car has an alternator lamp, I installed the resistor from the illustration and the system works properly. I have no experience with an amp or voltage gauge. I do know that a 3G can produce more amperage than the Amp gauge can safely handle leading to damage of your wiring.

It was trial and error on belt squeal until I bought a HiPo large diameter pulley. Since then, no more belt squeal. I took the pulley and alternator to the machine shop and asked him to make it fit!! The back side was clearanced so  the pulley would not hit the case before it bottomed out on the shaft. The front recess for the retaining nut was deepened to allow for a full nut when tight.  $25 later, I was good to go.

I would try pa performance 3G alternators ,with the kit that ties in the old harness in so your ALT light still works. I have that setup and works beautifully!

excite wire is connected to a keyed 12v source. your old alternator has that in the stock harness.. or connect any keyed wire. Its VERY simple..

I love having ability to keep ALT light on. and having the big 1 ga wire with the fuse too , so i am not overheating the old small wires. You will need to upgrade the wire from alternator to battery too.
 

I'll second PA Performance.  I used their alternator and install kit as well.  Works great, no issues, still looks very close to stock as well. 

I definitely would not use a 10Si alternator.  They were good in their day, but the 3G is a much more modern design, and fits stock bracketry without modification. 

For a 130A alternator you are going to need two V belts. They used to sell matched twin belts, but I don’t think they are available anymore.

Cab4word67 wrote:

OK thats what I needed going with the PA system, new question has anyone had problems keeping the V grove belt from slipping with a 130A?

Hi, i got v belt , with ac ,ps,alt + and except initial start squeaking there are no issue , BUT  anyway i suggest for serpentine belt , if you can / want choose . 
you will have less trouble in future finding right v belt size