Ballast Resistor for wiper motor?

[Moparfiend]

I am getting only high speed and no park on my wiper motor. I don’t see an external resistor and understand this controls the wiper speed and park. I am enclosing a picture of my wiper motor as it looks different from other wiper motors that had resistors externally mounted. This I believe is the factory original motor. Can anyone tell me if I need an external resistor and how it would be hooked up?

Thanks for your assistance on this MF

 

[493 Mike]

Have you been trying to use this without the ground strap connected?
Mike