1998 Durango. Left rear window will not operate either direction from master switch or rear door switch. All other windows operate as they should. Power locks and mirriors operate as well. Any ideas as to where I can find a diagram to trace wires or ideas of what the problem may be. Please email any thoughts. I may not be able to find your response on this site Thanks to everyone. mdryfuse@woh.rr.com

 

Probably regulator motor is shot.

 

Pull the panel and a meter the switch output. The first onion layer is to see if the motor is not getting power from the switches, or it is and is not using what it's getting.