between the two panels. There are a number of clips that hold that panel on, but as I recall it does come off with just some traditional chrysler door-panel clips.
looking at a connector farther up behind the dash that might feed both speakers and some other controls (i doubt it's the door connector if a) the other door controls work right and b) because your dash speakers is out too.) Also, you might have a connector on the back of the stereo loose..
Thanks! John