Hi, I just bought a second hand Kenwood DNX 8220 BT. I got the relevant ISO lead and have fitted it which was easy enough but for some reason the sound isn't coming out of the rear speakers It's the same for whatever I'm using (Ipod, CD or radio).

I wanted to see if anyone else has come across this problem before I strip it out again and connect the speaker wires directly and miss out the ISO.

My car is an 03 STI if that makes any difference

Cheers