The wiper motor has a constant 12 volts so that it can park when you turn the wipers off.
So either the selector switch on the steering column has gone, or the park switch within the motor has stuck on.
I would try the selector switch, and if there is a connection there then disconnect and the wipers should stop.
Hope this helps.
Best regards, Rustic
had exactly the same problem with a T2 only last week it was very odd, turned front and rear wipers on and neither would turn off, thought it had to be the switch so had a substitute but no different, only way was to pull the front and rear fuse, (funny thing is it went through MOT like this, with fuses in) wipers were working ok????? anyway sorted it by a deft bang to the relay box below the wiper motor, worked fine after, Rick
Interesting. I've just had the wipers turn to on when they were on intermittent, and they refused to turn off. Moving to fast then off usually turns them off. Rear wiper only sometimes works in the intermittent position so the combination made me assume stalk/switch. Perhaps I need to thump things!
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