Question about 1993 Mercury Grand Marquis

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No brake lights

All lights work on my 93 grand marquis but brake lights. fuse is good and bulbs are good any clue what it could be ?

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  • seadogie Dec 07, 2008

    thanks i'll check that out.

  • Anonymous Mar 26, 2014

    brake lights don't work

  • Anonymous Mar 26, 2014

    brake lights don't work

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Sounds like it has a bad brake lamp switch. It's possible that if you have a third brake lamp and that works, but the others don't, it is a bad multifunction switch. The brake switch is located on the brake pedal. The multifunction switch incorporates your turn signal/ hazard/ high beam lever mounted on the steering column. As confusing as this sounds, I hope this helps.

Posted on Dec 07, 2008

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Where is the tail light relay located on a 2003 Mercury Grand Marquis GS? My tail lights and parking lights do not work and I have checked all my fuses.


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You can check the brake light bulbs by removing the covers in the trunk, which may or may not be hidden behind a trunk lining. If there is a lining, simply pull it back and remove the protective cover and pull each bulb out and check for broken bulb wires or black burnt marks on the tips of each bulb.

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1 Answer

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little sand paper goes a long way.

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