R32 Gts-t Head Unit Wiring

[sammus]

Hey all,

After 10 years owning the car I decided to replace the Japanese radio that only picks up AM. Hoping someone can point me in the right direction:

I've pulled out the JVC unit that was in there, noted that the wiring has been modified already. I've copied the wiring as close as possible to hook up a Pioneer unit (DEH-155MPG) and the end result is a) no sound from rear speakers and b) poor AM quality.

First picture ("Front, rear") are the previous modificatoins. What are these mods and what do they mean for my install?

Second 2 are the connections I've made to the new unit.

Any help much appreciated.

Cheers

[sammus]

Okay, would appear that I need to bypass the amp in the boot.