The only electrical thing which works in the left rear door is the power window. The speaker, power lock and the interior lights do not work. I seem to have power to the door connector when I turn the radio on, hit the lock switch, etc. Is there a module or something in the door which conrols these functions? Anybody heard of a problem like this before? Thanks, Scott.

 

Your problem will be found in the wiring harness inside the door jam boot. Half the wires in mine were broke from poor design....fixing mine today, or replacing the whole harness. Better fix it quick before the window quits too like mine did. (02 Qd 1500).