I have a 1998 GTV 2 litre TS. The wipers have developed a mind of their own. Sometimes they wont go on sometimes they wont switch off. The stalk still manages to change the speed from normat to fast and when it is on interrmittant you can hear the wiper moter clicking as it should. Does anyone have any advice on what might be wrong. I did get another wiper motor to see if that was the problem but it does exactly the same thing with the new motor. have changed relays around at the fuse box also. If anyone has a wiring diagram for this Id be most grateful.