Brake, turn signal and hazard lights not working

1982 FORD F-250
150,000 MILES • 6.1L • V8 • 2WD
Avatar
DONNAJCP
  • MEMBER
  • 6 POSTS
Put on light switch all lights come on..but push on brake, no brake lights. No turn signals and no hazards.. replaced fuses put in new signal harness replaced bulbs (twice). We are thinking a short in this truck also. But not sure where to start or check something else first. thanks
Aug 22, 2019 at 6:27 AM
Advertisement
Avatar
STRAILER
  • ✓ASE Certified Mechanic
  • 54,840 POSTS
  • ASE Certified Mechanic
Hello,

This is common when the contracts in the hazard switch become dirty. I would try aggressively cycling the hazard switch back and forth to help clean the contacts. Let me know if that helps.
Aug 23, 2019 at 1:52 PM
Avatar
DONNAJCP
  • MEMBER
  • 6 POSTS
We will give it a try this weekend. Thank you
Aug 23, 2019 at 5:30 PM
Avatar
DONNAJCP
  • MEMBER
  • 6 POSTS
Sorry, just remembered we replaced the whole turn signal harness, which included a new hazard switch.
Aug 23, 2019 at 6:16 PM
Avatar
STRAILER
  • ✓ASE Certified Mechanic
  • 54,840 POSTS
  • ASE Certified Mechanic
Okay, here is a guide to help you test the connection and for power and the brake light wiring diagrams so you can see how it works. Check out the diagrams (Below). Please let us know what you find. We are interested to see what it is.
Image (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Aug 26, 2019 at 11:51 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.