brake light switch for 1999 Grand Prix

1999 PONTIAC GRAND PRIX
140,000 MILES • 6 CYL • FWD • AUTOMATIC
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JOEMAC82
  • MEMBER
  • 3 POSTS
My 1999 Grand Prix 3100 continues to blow the fuse related to the brake lamps. I disconnected the brake lamp switch, took it apart, and it seems to all be working fine. I tested each individual wire from the wiring harnesses and no fuse tripped. I put them back in, depressed the brake and the fuse blew again. Any suggestions?
Dec 30, 2010 at 12:02 PM
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SATURNTECH9
  • ✓Experienced Mechanic
  • 30,869 POSTS
Your looking at a power wire shorted to ground i think you are looking in the wrong place looking at the switch.Do you have a multimeter we could try to narrow it down with that.
Dec 30, 2010 at 12:09 PM
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JOEMAC82
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  • 3 POSTS
I don't have a multimeter. Would a test light help at all?
Dec 30, 2010 at 12:31 PM
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JOEMAC82
  • MEMBER
  • 3 POSTS
Im working on getting a multimeter right now. I will get back to you as soon as I do. Thank you so much.
Dec 30, 2010 at 12:44 PM
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SATURNTECH9
  • ✓Experienced Mechanic
  • 30,869 POSTS
Let me know a test light would work but would be a lot harder to use because you would have to hook one end to power to test for a short to ground.Let me know when you get the meter.
Dec 30, 2010 at 12:58 PM
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