s15 jimmy brake lights!!?

1990 GMC JIMMY
188,562 MILES
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FIERRO00
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  • 2 POSTS
My brake lights are not working, so i replaced the brake switch and they still dont work. What could be the problem?
Apr 21, 2013 at 12:04 PM
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JDL
  • ✓ASE Certified Mechanic
  • 16,098 POSTS
  • ASE Certified Mechanic
If you have a high mount brake lite, does it work? Did you check for voltage to and from the stop lamp switch?
Apr 21, 2013 at 12:28 PM
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JDL
  • ✓ASE Certified Mechanic
  • 16,098 POSTS
  • ASE Certified Mechanic
The orange wire at the stop lamp switch is hot all the time. That voltage comes from the stop/hazzard fuse in the fuse box. When the stop switch is activated, the white wire becomes hot carries voltage to turn signal switch. Your lower brake lites are wired through the turn signal switch.
Apr 21, 2013 at 12:41 PM
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FIERRO00
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  • 2 POSTS
I dont have a high mount brake light. I dont really understand what your telling me
Apr 21, 2013 at 2:55 PM
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JDL
  • ✓ASE Certified Mechanic
  • 16,098 POSTS
  • ASE Certified Mechanic
Did you check the stop/hazzard fuse in the vehicle fuse box? What don't you understand?
Apr 22, 2013 at 6:04 AM
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