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Brake lights stopped working

Tiny
PATRICK WALLACE
  • MEMBER
  • 1990 CHEVROLET 3500
  • 7.4L
  • V8
  • 2WD
  • AUTOMATIC
  • 167,000 MILES
My brake lights stopped working. I have replaced the bulbs, circuit boards behind the lights, fuses and the brake light switch. I cannot figure out what to do next.
Thursday, July 6th, 2017 AT 12:55 PM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
Hello,

It sounds like it is the turn signal light switch, here is a wiring diagram (below) and a guide to help you get started.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Please let us know what happens, we are interested to see what it is.

Cheers, Ken
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Friday, July 7th, 2017 AT 2:35 PM
Tiny
PATRICK WALLACE
  • MEMBER
  • 2 POSTS
It isn't the turn lights. When I push the brake light switch as far back as I can it turns off and the stop fuse keeps blowing
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Sunday, July 16th, 2017 AT 12:09 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,643 POSTS
I would start at the brake light bulbs, remove them to see if the fuse blows

Please let us know what happens.

Cheers, Ken
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Monday, July 17th, 2017 AT 9:55 AM

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