Wiper Problems on 1993 Volkswagen Golf

I've got a 93 Golf and the wipers go on sparatically for no reason rain or shine when they are in the off position. The single 15 watt fuse is fine, any one know what part has to be replaced?

Asked by for the 1993 Volkswagen Golf
The wiper relay for the intermittent function and/or the wiper switch are known issues.
Of course wiring and connections need to be confirmed ........