I'm starting to get agitated by this whole thing. After spending this kind of money on the system I want to quit dicking with it and just enjoy some tunes! Alas, even after drastic adjustments, my alternator whine is still persisting.
I decided to move the crossovers, which were determined in Pt 1 to be the problem, to the trunk from under the dash. I figured why mess around when I can be sure it will work? Thus, I removed the now defunct factory amplifier and purloined the mounting bracket it was on. A spare piece of oak (ooooo, aaaahhh) served as the mounting surface, which was carpeted. The crossovers were then screwed on and the whole assembly mounted and wired up.
Previously, I had also been getting whine even when the head unit and amps were OFF; this was found to be caused by the RCAs. I moved these into a very cramped opening along the side of the rear seat. This managed to fix the problem and no more whine when no power! Small victory.
So after wiring, and testing the RCAs, I started the car and immediately wanted a stiff drink, as the whine was still there, PLUS odd noise. I only have a few theories:
1. Signal wires going through grommet are picking up noise from the wiring loom.
2. Nearby ground point messing with the crossovers.
3. Chassis is just freaking charged and no matter where I put these things outside of a lead ****ing box I'm going to get goddam whine.
One more possible hint: I noticed that when I change CD's the NOISE portion dips considerably, and you can hear the CD loading through the speakers. The WHINE exists no matter what I do.
Good God, if anybody knows ANYTHING about this, please help me. I just want to listen to my music without my ears bleeding from the whine!
Pics below of the install:
New mount:

Bottom:

Mount location (brown wires are chassis grounds for the old amp and brake lights):

Speaker wire thru wall:

More mounting point, with wire looms at the bottom:

In place:

Wide shot:

Medium shot:

Amps moved back (with messy wiring):

Wiring cleaned up a bit:
