I completely removed the fader knob and used four of the wires between the fader and the stock amp as pos and neg for the two rear speakers. The connections at the stock amp connector were done to complete the connection to the speakers. I ran new wire to both front speakers from the head unit. I did not use any of the stock wiring of the front speakers. So in the end there are 8 wires for speakers coming off the head unit.
I was just trying to show how I repurposed the stock wiring on a 4 wire / fader in dash car that didnt have the twisted pairs further back in the harness. In the end, the fader is gone, the stock amp is gone, and new speaker wires are installed for the front speakers. Rears are wired using existing wiring.
The deck that was in the car when I bought it was wired through the fader / stock amp and was only using two channels of power. That seemed silly to me. After installing this deck and using all four channels without going through the stock fader / amp, the sound quality has gone up immensely.
Sorry about the confusion.
Here's a complete list of how everything is connected.
Deck Connections:
Car ---> Deck
Red/Green ---> Yellow (12V Const)
Violet/White ---> Red (12V ACC)
Brown/Black x2 ---> Black (Ground)
Gray/Red ---> Orange (Illumination)
White ---> Blue (Antenna On)
White ---> Blue/White (Amp On)

Speaker Connections:
L/F + R/F speakers: New Wire directly from deck to speakers
L/R:
Speaker + ---> Black/Red ---> Yellow/Red ---> Green (L/R +)
Speaker - ---> Black/Violet ---> Yellow/Black ---> Green/Black (L/R -)
R/R:
Speaker + ---> Black/White ---> Blue/Red ---> Violet (R/R +)
Speaker - ---> Black/Brown ---> Blue/Black ---> Violet/Black (R/R -)


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