I am trying to fix my brothers VT Calais (1998). Everything that is powered by the BCM works except there is no power out to supply the electric windows. Does anyone have a circuit diagram of the BCM so that I can try and identify where in the circuit it has failed. I can't see any obvious dry joints so it may be a surface mounted resistor that has died. Any other suggestions short of lighting the car would be appreciated. Although I am heading that way