How do I fix a left brake light short circut?

1999 FORD EXPLORER
180,000 MILES
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ZAYPHOD
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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.
Dec 31, 2011 at 8:49 PM
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SATURNTECH9
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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.
Dec 31, 2011 at 9:07 PM
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ZAYPHOD
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The first thing I did was replace bulbs and fuses.
Jan 2, 2012 at 7:18 PM
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SATURNTECH9
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Do you have a multimeter to do some testing?
Jan 2, 2012 at 7:27 PM
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ZAYPHOD
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yes, just noticed brake light is not as bright as other side, going to check ground
Jan 2, 2012 at 9:15 PM
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SATURNTECH9
  • CAR REPAIR CONTRIBUTOR
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Make sure the ground wire is 2ohms or less to ground.Let me know what you find.
Jan 2, 2012 at 11:28 PM
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