Question about 1996 Mercury Mystique

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Head light switch replaced 3x in last 6 months, connection plug to headlight switch burnt and interior lights are always on will not turn off, need door sensor tester

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Headlight is probably not the problem, espeically in light of the burned plug, replace the plug and any wires leading up to it that are overheated or you will have continual problems. Once a connection overheats, it looses all temper and cannot squeeze tightly enough, and the material oxidizes, creating resistance, and both pieces need to be replaced or failure will occur again, quickly.

On the door sensor, meaning door light switch, unscrew it and disconnect the wire(s) at each switch.

Posted on Sep 24, 2009

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