no tail lights or brake lights?

1998 MAZDA PROTEGE
190,000 MILES
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LPEEK
  • MEMBER
  • 55 POSTS
no tail lights or brake lights. turn signals work. brake light in rear window comes on with head lights and parking lights. I noticed that the radio light dims when I apply the brake. I am thinking maybe ground . any other ideas Thanks
Aug 1, 2013 at 6:57 PM
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SQM
  • CERTIFIED EXPERT
  • 6,383 POSTS
Hello,

This could be due to a faulty brake light switch.
The brake light switch is located under the brake pedal lever.
When the pedal gets depressed, the switch gets pushed and the brake lights get illuminated.

That switch could be shorted out and creating this issue.

https://youtu.be/RBCDVfzNQGk

I have attached the testing procedure for the switch.

Another possibility is faulty wiring for the brake lights. I have included the wiring schematics below

https://www.2carpros.com/articles/how-to-check-wiring

Please let me know of any questions.
Thank you.
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Oct 18, 2021 at 9:24 PM