Have a 2012 MVP that has the emergency exit buzzer sounding at a reduced volume anytime key is on. If a roof hatch is opened or a side window exit opened it goes to full volume. I can't locate a wiring diagram for this circuit. Any ideas?
Whats puzzling to me is that there is not enough ground to the ground side of the buzzer to light a 12 volt incandescent test light until you open an emergency exit but connect an LED light and it behaves like the buzzer, low output until exit opened and then full output.
Do you mean HDX? I had a similar thing going on with one of mine. What i ended up finding was one of the wires for the rooftop switches (mine does not have them but the wiring was there) was grounding out on a screw. If i remember right they were blue wires in the main harness over the windows on the street side, and they take a 90 degree turn at each roof hatch. hope that helps.