Windshield Washer - Five Hundred and Montego
WARNING: This page is about a different car, the 2005 Mercury Montego, 2005 Ford Freestyle, and 2005 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.
The windshield washer is activated by the internal wiper motor module when it receives a ground signal from the wiper switch wash circuit. The internal wiper motor module activates the internal windshield washer relay by grounding the relay coil. When the relay is activated, it connects 12 volts to the washer pump, which is grounded to the chassis through circuit 1205 (BK).