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Home >> Mercury >> 2008 >> Milan Base, 3.0 1, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 721 (Exterior Lighting System) >> Diagnostic Tests >> Headlamps >> Pinpoint Tests >> Pinpoint Test A: Both Headlamps Are Inoperative >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2007 Lincoln Mark LT and 2007 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.

Battery voltage is supplied to the headlamp switch through circuit 196 (DB/OG). When the headlamp switch is placed in the headlamps ON position, voltage is transferred to circuit 15 (RD/YE) which supplies voltage to the multifunction switch which then directs the voltage to the low beam headlamps or to the high beam relay.

Possible Causes

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