need help with yet another little problem. my rear speakers dont work. The fronts do but sound a little disstorted. I have an aftermarket radio in there and all the connections seem fine, there is an iso adapter in there which it is connected by. what does seem odd is that in the iso adapter coming from the audi loom end (hope that makes sense) is only four wires (i.e just front speakers) this wire is also larger than the other wires in the car. It still looks like genuine stuff but seems odd there is only 4. there is a red plug in the audi loom that looks like a plug has gone into it to connect with what i am guessing would be the rear speakers but this has 5 wires in it? it would seem like there is a L AND R and then say a common earth (i.e 2 wires going into 1 connector) i will try and get some pics up if someone can tell me how and this might explain things a little.