Normal Operation
WARNING: This page is about a different car, the 2005 Mercury Mountaineer and 2005 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
Under normal operation, the windshield wiper motor receives open and ground inputs from the steering column multifunction switch through circuits 671 (LB), 680 (LB/OG), 682 (DB) and 684 (PK/YE) to activate the wipers to the appropriate speeds.