After any hinge adjustment or replacement, the courtesy light sw…

After any hinge adjustment or replacement, the courtesy light switches must be reset, but it's usually not necessary to remove them as I have. This may also be necessary if the hinges are worn out, but simply resetting the switches won't fix the hinges - they have to be replaced, or the dome light will stay on when the switches get maladjusted again by the worn hinges. Usually, the switches can be reset by spraying on some penetrating oil & then simply pulling the black plunger STRAIGHT out with pliers. Don't grab hard enough to break the plunger head, and don't pull sideways or twist.

There's only a slight difference in these door switches. On the early style, the connector (black pointer) actually moves when the pin is pushed, exposing the switch terminals. On the late style (Motorcraft SW6345, Standard DS278T), the switch is fully enclosed. The nut (gray) is 9/16 for both. The brass sleeve (yellow) is adjustable for door alignment.

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Owner caption November 2004 · Photo 838 of 5000