Normal Operation
WARNING: This page is about a different car, the 2004 Mercury Mountaineer and 2004 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
Under normal operation the multifunction switch receives ground through 1302 (WH/LG). The rear wiper motor receives input from the multifunction switch through circuit 410 (WH/OG) to operate the rear wiper wash and wipe function.