Over the last few weeks sometimes my wipers will not trun off. Even with the ignition off!
The only functionality possible is to switch to High rate (pos 7 on the wiper control), then after a few minutes the seem to respond again.

However whilist tucked up in bed last night, I could hear a strange noise outside the window. Looked out the curtains, and theres my GV with its Wipers flying side to side. Again was only possible to switch between high rate and normal. In the end I removed the On/Off Relay so I could go back to bed!

Any thoughts where to start?