OK SC guys, I found the circuit for your cars:
As I suspected, it works almost the exact same way as the Carrera circuit. Not surprising since the window switches themselves are the same part.
The main difference in this circuit is the lack of the power window timer relay. The SC has a regular old SPST relay in it's place, which means after the ignition is killed, no power to the windows. So tracing from the top down:
Power from bus X supplies the + side (pin 86) of the power window relay coil. The - side of the coil is always grounded. So, when bus X is hot ("acc" and "run"), the power window relay is on and switches bus 30 (hot always) to the power window circuit. From pin 87 of the relay is goes through a fuse (like in the Carrera, except here it's fuse 21 instead of fuse 1) and then off to the power window circuit.
The rest of the circuit - the three window switches (DWDD, PWDD, PWPD) are the same, wired the same way, and work the same way. The passenger window switches are again wired in series, so if you're having passenger window issues, you need to check both switches.
With the key in the ACC position, all voltages and voltage readings in the SC circuit will be the same as they were in the description of the Carrera circuit, so use that as a troubleshooting guide.
The only other difference I see between the two diagrams (other than the timer relay) is some minor wire color differences. Both diagrams are marked with the wire colors (the Carrera diagram is in German, hence the abbreviations).