Soundproofing/Soundsystem help

[jedge1.8t]

Need some help understanding this audio system in a 2001 TT 225 coupe, non-bose i believe.

Diagram:


On the bottom there will be line out and then the RF RR / LF LR, is there a way i can make these - & +???

The system has its own built powering rear speakers which i was planning on keeping:


Harness 8-pin connector; into amp, green/red (opposite striped) go to left rear speaker:


Need help connecting the lines to my head unit. I have a RCA transciever too if it helps to keep the stock amp, will help take much time away.

System is ALPINE BT/IPOD 305s, ALPINE inline amp, kicker DS65 x 4, kicker 12" CVR, 1000w amp.

more pics:



whole hatch was rhinolined + rubber cargo matted.

[jedge1.8t]

Does anyone know what the HU red ACC wire goes to harness? I connected it to the S slot on the top harness piece. I thought that stood for signal. I'm not so sure after reading some other threads