How do I remedy a backwards wiper motor replacement wherein the wipers park in the wrong position?
Who installed the wiper motor? Were the wiper arms repositioned because of a bad wiper motor? I would just have a good, independent mechanic remove the motor, if necessary and reinstall everything correctly.
The crank arm can be installed 180* out of time. That connection is the only component in the mechanical linkage that is separated in the replacement of most wiper motors.