S15 Jimmy brake lights?

Tiny
FIERRO00
  • MEMBER
  • 1990 GMC JIMMY
  • 188,562 MILES
My brake lights are not working, so I replaced the brake switch and they still dont work. What could be the problem?
Sunday, April 21st, 2013 AT 12:04 PM

4 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
If you have a high mount brake lite, does it work? Did you check for voltage to and from the stop lamp switch?
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Sunday, April 21st, 2013 AT 12:28 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
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.
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Sunday, April 21st, 2013 AT 12:41 PM
Tiny
FIERRO00
  • MEMBER
  • 2 POSTS
I dont have a high mount brake light. I dont really understand what your telling me
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Sunday, April 21st, 2013 AT 2:55 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Did you check the stop/hazzard fuse in the vehicle fuse box? What don't you understand?
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Monday, April 22nd, 2013 AT 6:04 AM

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