My 1988 Silver Spur's right rear window will not go up using either it's control switch or the driver's switch. I removed the right rear interior door panel looking for the control module (which is where the dealer said it would be). There is no control module located in the right rear door. While trouble shooting the rear window, the driver's window started doing the same thing. Now it too will go down but not up. Where is the master window control module located? I would appreciate any assistance.