For the life of me I cannot find anywhere in any of the tm's diagnosing the wiper motor, which pins should have power. The sprayer works but wipers don't. If the sprayer has power shouldn't the wiper motor too? I have two pins going into the bottom of the wiper switch, I have four pins at the wiper motor coming from the switch I guess for the various wiper speeds. Is the switch possibly bad and the motor is fine? I don't know which pins to test on what switch setting.