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Home >> Mercury >> 2010 >> Milan Base, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 928 (Exterior Lighting System) >> Diagnostic Tests >> Trailer Lamps >> Pinpoint Tests >> Pinpoint Test Y: The Trailer Lamps Are On Continuously >> Normal Operation

Normal Operation

WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.

Voltage to the trailer tow lamps is controlled by the smart junction box (SJB). Circuits 52 (YE) and 64 (DG) supply voltage to the trailer tow LH and RH stop/turn lamps respectively. Circuit 962 (BN/WH) supplies voltage to the trailer tow parking lamps.

Possible Causes

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