BMW Repair: 92 318i Sedan Power Window Failure., 1992 bmw 318i, bmw 318i

Question
Hi, I have a 1992 BMW 318i Sedan.
All four power windows have failed, and I have eliminated the lift motors (tested fine), and comfort relay (replaced with new). I was leaning towards the power window module that mates with the driver's window motor assuming it controls the rest of them, however I read in another post there may be a cut off switch that has to be reset after the power has been disconnected? The windows worked before the car was sent for body / stereo work however the gentleman that did the work is unreachable / unreliable, leaving me to clean up his mess. Any help would be great.

Answer
there is a circuit breaker switch in front of the key(when in ignition) on dash. make sure this is pushed in. and of course check your fuses. As for as damage a butcher can do, don't get me started. Let me know if you need more detailed info on the wiring.
            Good Luck, KImber