Normal Operation
WARNING: This page is about a different car, the 2005 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
The multifunction switch routes power through circuit 13 (RD/BK) to CJB fuses 23 (10A) (RH headlamp) and 25 (10A) (LH headlamp). After passing through the fuses, voltage is then carried through circuits 161 (DG/OG) (RH headlamp) and 160 (DB/WH) (LH headlamp) to the low beam headlamps. Circuit 57 (BK) is the ground circuit for the headlamps.