My rear wiper seams to be stuck on , a few days ago it would go on every time the power was on in the truck, even tho it was switched to the off position. I would flip it to on, and then to off, and the wiper would seat. Now it is on regardless what i do, anytime the power is on in the truck.

Furthermore when i would shut the truck down with the rear window open, the wiper would still operate, once the power was on. Im pretty sure theres a short somwhere, but wanted to know if there was anybody who experience somthing similar