1981 Ford F-150 Brake Lights Out

FORD F-150
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KORI
  • MEMBER
  • 2 POSTS
i just bought an 81 ford f150 custom it runs on propane and the brake lights dont work i have running lights and my blinkers work but we put in all new bulbs and the switch on the pedal is still good could it just be the wiring? or waht
May 17, 2006 at 2:26 AM
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LOSONE
  • ✓Experienced Mechanic
  • 1,616 POSTS
Propane carburation has nothing to do with brake lights. I must have installed over 2000 propane units.

As you know the brake light sw is on the top of the brake pedal. Are you sure it is good? Also the fuse?

If they are both good then it is your turn signal sw as the barke light go through it. It allows you to have your brake lights on and a turn signal working at the same time. Good luck.
May 17, 2006 at 4:58 AM
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KORI
  • MEMBER
  • 2 POSTS
yes the fuse is good. but i dont have brake lights at all but i will look into that thanks
May 17, 2006 at 7:08 AM
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Suggested Repair

Confirm the brake-pedal switch and fuse are good. If both check out, inspect or replace the turn-signal switch, since brake-light power passes through it so the brakes and a turn signal can work together.

Conversation Summary

The owner of a 1981 Ford F-150 Custom that runs on propane has no brake lights, although the running lights and turn signals work. New bulbs were installed and the pedal switch was believed to be good. The expert said propane carburetion is unrelated, then advised verifying the brake-pedal switch and fuse. If both are good, the turn-signal switch is the likely fault because brake-light power routes through it. The owner confirmed the fuse is good and planned to check that switch.

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