window and sunroof issues in 82 300CD

[pleiades]

Just bought a 300CD with 200k miles... i knew when i got it i would need to put some money and time into it, but... wow.

Driving the car home, I opened all four windows and sunroof, this all worked fine. The sunroof was a little dodgy on the way back, eventually failing to respond to the controls altogether. I cranked it closed with a ratchet wrench and have determined that the motor works, because it will open, but it won't close, like the current isnt flowing to the motor. Any ideas?

Much more importantly, the rear passenger window does not close. It opened fine, and 20 minutes later does not respond to the control. I replaced the fuse it is on, but that doesn't seem to be the problem as the front driver's window is working. Is the switch a possible point of failure?

thanks