Normal Operation
WARNING: This page is about a different car, the 2006 Ford F550 Super Duty, 2006 Ford F450 Super Duty, and 2006 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
When the multifunction switch is placed in the LH or RH turn position, voltage is routed through circuit 3 (LG/WH) (LH front turn lamps) or circuit 2 (WH/LB) (RH front turn lamps). The turn lamps receive ground through circuit 57 (BK).