Okay, now that everything is in, time for some testing on my part.
History:
The belt on my alternator has been slipping (the load is 4x the stock load on the belt) and I need to solve that problem.
Today's testing will include
1) Belt timing test, by hooking to spark plugs and usingthat strobe light timing thing to find out where it's slipping (my dad's equipment, I forgot the name)
2) Check all engine grounds, etc. for tight connections and etc.
3) Check voltage drop throughout all wires and make sure I don't need to upgrade to 2/0 from batt's to the amp (its about a foot only...)
4) Use a clamp-on ampeter (sp) to test alternator output. if less than 250 (significantly) i know the belt is slipping
5) Use my new (got it for christmas) DMM's high/low feature to check for lowest voltage at batts, and at amp while full tilting
6)Check RCA voltage and make sure both channels are equal at exactly 6 volts
7) GET PICS AND VIDS FOR YOU GUYS