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Brake lights not working?

Tiny
REPAIRNEWBIE
  • MEMBER
  • 1999 MERCURY MOUNTAINEER
  • V8
  • AWD
  • AUTOMATIC
  • 124,000 MILES
The turn signals and tail lights work. My third brake light works but my regular brake lights do not. Any thoughts? I replaced the brake light switch already. Also I do not have a fuse box chart to tell me which fuses are for what. Thanks in advance for any help.
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Thursday, January 1st, 2009 AT 11:01 PM

1 Reply

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

If the third light works, it is not a fuse. The wires for the rear lights come off a splice with the third light.

https://www.2carpros.com/articles/how-to-check-wiring

I attached the diagram for you to view. Check the splice if you can find it. Check the light green wire at the tail lights for power as well.

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Roy
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Saturday, July 31st, 2021 AT 4:27 AM

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