BRAKE LIGHT SWITCH FOR 1999 GRAND PRIX

  • Tiny
  • Joemac82
  • 1999 Pontiac Grand Prix
  • 6 CYL
  • FWD
  • automatic
  • 140,000 miles

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?

Thursday, December 30th, 2010 AT 8:02 PM

4 Answers

  • Tiny
  • saturntech9
  • Expert
  • 28,774 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.

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Thursday, December 30th, 2010 AT 8:09 PM
  • Tiny
  • Joemac82
  • Member

I don't have a multimeter. Would a test light help at all?

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Thursday, December 30th, 2010 AT 8:31 PM
  • Tiny
  • Joemac82
  • Member

Im working on getting a multimeter right now. I will get back to you as soon as I do. Thank you so much.

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Thursday, December 30th, 2010 AT 8:44 PM
  • Tiny
  • saturntech9
  • Expert
  • 28,774 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.

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Thursday, December 30th, 2010 AT 8:58 PM

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