I have a 2015 Thor Hurricane 34j.. This is driving me bonkers.. Ford replaced to wiper module last year. Didn't fix it. I had replaced the motor and the wiper switch steering column year before that. I have metered out the ground seem fine with a meter.. Any idea's . I wonder if I cut the ground wire to the wiper motor and go directly to the neg battery terminal If that would have a good effect vs bad. I don't have a schematic so I don't know if the ground is coming out of the control module.. When I mean wont park I mean they won't shut off and park. I have to turn the engine off and put it in ACC so they will shut off.. Not a lot of fun while going down the highway and it stops raining. High, Low, Washer work fine..