2016 389 Intermittant wiper problem

when on intermittant the wipers only go to the left and stop straight up then will go back down untio the next cycle and always stop to the left till next cycle. We replaced the motor and the stalk switch and still does the same. What else do we look for????

 

Thank you
we will check that out this weekend, 1 stupid question is there a way to clean them pins or do you need to replace it

 

look for a duetsche conector on the firewall, ours was behind the wireharness that goes into the fusebox. so it was hidden
the air conditioner quit working also so all of that runs thru the connector.
good luck