intermittent brake light failure

1999 CHEVROLET MONTE CARLO
94,000 MILES • 3.1L • V6
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DICK L. COLLINS
  • MEMBER
  • 1 POST
Third brake light works. Sockets when pressed come out to .314. Turn signals, and running lights work. Now, the headlights stay on except when ignition if off. I checked all bulbs, and pedal switch. Fuses all test great. I'm at a loss.
Feb 2, 2020 at 10:02 PM
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ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
Good morning,

I attached a wiring diagram for you to view. Check the white wire highlighted from the stoplight switch to the turn signal switch for power with the brake pedal depressed.

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

If it has power, then test the wires highlighted for power out to the rear sockets. You may have a bad turn signal switch but needs to be confirmed.

Roy
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Feb 3, 2020 at 4:04 AM
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