Help, my electric windows and sunroof have stopped working. The 10 A fuse in the fuse box in the car and the 30A fuse in the engine bay are good. Wiring from battery to switch proves motors and switches are all OK. There is a "circuit breaker (item 74) in the haynes manual, this looks like a candidate as it is common to the windows and sunroof. Where is item 74, the "circuit breaker".

Thanks in advance for your help.