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How do I fix a left brake light short circut?

Tiny
ZAYPHOD
  • MEMBER
  • 1999 FORD EXPLORER
  • 180,000 MILES
99 explorer. Only with lights on, the left rear brake light will not light and the left rear tail light goes out when brake is applied. When brake is released tail light comes back on. With lights off brake light works fine.
Saturday, December 31st, 2011 AT 8:49 PM

5 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
The first thing I would check is make sure you have all the correct blubs in the sockects plus make sure the brake bulb isnt bad and shorting the two circuits together.
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Saturday, December 31st, 2011 AT 9:07 PM
Tiny
ZAYPHOD
  • MEMBER
  • 2 POSTS
The first thing I did was replace bulbs and fuses.
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Monday, January 2nd, 2012 AT 7:18 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Do you have a multimeter to do some testing?
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Monday, January 2nd, 2012 AT 7:27 PM
Tiny
ZAYPHOD
  • MEMBER
  • 2 POSTS
Yes, just noticed brake light is not as bright as other side, going to check ground
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Monday, January 2nd, 2012 AT 9:15 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Make sure the ground wire is 2ohms or less to ground. Let me know what you find.
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Monday, January 2nd, 2012 AT 11:28 PM

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