Brake lights do not work

1985 PONTIAC PARISIENNE
200,000 MILES • RWD • AUTOMATIC
Avatar
JUSTIN MICHAEL OLIVER
  • MEMBER
  • 2 POSTS
Brake lights do not work but running lights and blinker and hazards do. The fuse is good all the way to the brake switch, but nothing is coming out the other end. I am using a test lamp. not much tools to work with, do not know if I am siring the test lamp right to determine if the brake switch is bad or not. please help.
Jun 23, 2017 at 8:50 PM
Advertisement
Avatar
STEVE W.
  • ✓ASE Certified Mechanic
  • 15,200 POSTS
  • ASE Certified Mechanic
If the hazard and turn signals work but no brake lights, it is most likely a bad brake lamp switch. Ground one side of the test light to a good ground, now probe into the back of the switch connector. With no pressure on the pedal you should have battery power on the orange wire. When you apply pressure on the pedal the switch should close and apply battery power to the white wire. An easy test is to just disconnect the switch and jumper the two brake feed connections with a short wire, if the brake lights come on = bad switch. If they do not it is more likely to be a bad multi-function switch that has bad contacts.
Jun 24, 2017 at 1:12 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.