My windscreen wash hose is correctly set up, the two nozzles are clear, but no water is being sucked up when the switch is pulled out all the way.

Presumably there's no relay connected with this, so where so you think the likely culprit is? I can't see any wires loose at the switch, although if it's a dodgy connection I may need your help in identifying which wire controls the water.

Thanks a lot, as always,

Tom