My good old 850 has a problem with his rear wiper motor: At first one day the rear wiper was suddenly too far distracted and was stuck over the license plate (no idea how this happened). I removed the wiper and after the shaft did not move without an arm, I removed the mechanics in the boot flap and separated them from the wiper motor, with the following result: – The engine turns, solved from the mechanics, only in a a direction (in continuous or even interval operation) – On the plug there are constant 12V on both poles compared to the mass – If I attach the wiper mechanism again to the motor shaft, it turns of course once to the stop and then clicks only stupid Actually it would have to turn again in the other direction after that, right? In the meantime I ordered and installed a tested used engine in the bay, but the problem remains . Now I am unfortunately finished with my Latin. Who can help? Thank you!