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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 >> Trailer Lamps >> Pinpoint Tests >> Pinpoint Test W: The Trailer Lamps Are On Continuously >> 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.

The parking lamps are controlled by the trailer tow parking lamp relay. When the trailer tow parking lamp relay is energized, voltage is routed from the central junction box (CJB) to the trailer tow connector through circuit 962 (BN/WH).

The reversing lamps are controlled by the trailer tow reversing lamp relay. When the trailer tow reversing lamp relay is energized, voltage is routed from the central junction box (CJB) to the trailer tow connector through circuit 140 (BK/PK).

Possible Causes

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