Door Subwoofer Speaker in '07
 

I upgraded my CDR-24 with a new pioneer AVIC-X920BT. It seemed to be working well with the factory AMP and speakers until I noticed that the subwoofers in the door are not operating. Anyone have any idea how to go about testing the output from the AMP. I would trying to avoid removing the door panels to get to the speakers and do not have a clue on the colors for the wiring harness out of the AMP.

Any help is greatly appreciated.

I don't think the AVIC has the fibre-optic MOST connection to the factory amp, does it? you're probably not getting anything fro the amp, and just powering the operating speakers from the head unit.

No it does not. I took the wires from the back of the CDR-24 (Connector B) and wired them to the AVIC.

I guess I wasn't very clear. I think the door "sub" wiring goes to the amp in the trunk, and not directly to the head unit. The only way to power them using the AVIC is to add an aftermarket amp, or run new wires from the head unit ( which I wouldn't do ).