Rear Windows

[Kodiak]

Greetings everyone. First I would like to say what an incredible site this is. Wow. My wife and I recently bought our first MB. It's an '88 190E. Base model, black with tan pleather. Pretty cool though. These cars really do ride much nicer than anything the U.S. makes. Ok, enough. We bought a car we could afford, not exactly what we would have liked so there are various problems. I will start with this one: Both of the rear windows will not go up or down. There doesn't seem to be any power to them. There is power to the switch at the center console but not the back switch. I checked with a voltmeter. Where does the wiring go or is there some relay that I should check before I really tear into this? The switches in the center console are a double switch. One for the front and one for the back. If I unplug the rear window connector the switch lights up. When I plug it in the light goes out. Any suggestions are appreciated. Thanks.

Kyle