Audi 200 rear speakers

[Vittorio Bares]

I'm trying to install an aftermarket head unit into the car. I'm sure
there's quite a few of you who've BTDT :-)

 

The stock unit has the regular 3 plugs, black, green and red.

 

I've figured out how to power the unit from wires in the black plug.

 

The green plug powers  the 2 front speakers. No problem there.

 

The red plug has wires for the rear speakers. Theres a red/green wire,
and a red/blue wire. I've traced these back to the amp under the rear
seat. Checked integrity of the wires from the red plug to the amp and
from the amp to the speakers. Everything seems to check out ok. I also
checked the white/black wire which I assume is the (mutual?) ground.

 

I've also brought a wire directly from the head unit to the speakers and
they seem to work.

 

Should I be able to use the stock amp? Or should I just wire straight to
the rear speakers from the head unit?

 

TIA !

 

Vittorio -