:lol:
Turn the stereo off, heater off, even the engine but keep the ignition at position II. The pump(s) will make a noise when you try to clean the window.
If the pumps don't make a noise but the wipers are moving then the pump(s) are shot.
My bet is they are frozen
:lol:
...but to answer your question it's fuse No.20 (20A) under the dash or fuse No.20 under the bonnet.