Low Speed Windshield Wipers
WARNING: This page is about a different car, the 2004 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
Low speed operation is activated when the multifunction switch provides ground to the low speed inputs of the SJB. When low speed is requested, the SJB activates the windshield wiper run/park relay by grounding the relay coil. When the windshield wiper run/park relay is activated, it supplies voltage to the low speed output of the windshield wiper high/low relay. The SJB continues to cycle the windshield wiper in low speed mode until the inputs from the multifunction switch are changed from the low speed position.