Hazard, blinkers and brake lights not working

Tiny
GENE COXIE
  • MEMBER
  • 1993 FORD F-150
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 313,236 MILES
Rear lights.
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Saturday, July 17th, 2021 AT 7:27 AM

3 Replies

Tiny
SQM
  • EXPERT
Hello,

Is your turn signal still functional?
You could have some type of wiring issue.
Have checked to see if your flasher relay functional?
You might have to check the wires to see if there is any type of issues with them.

https://youtu.be/Hlna_kUt7As

https://www.2carpros.com/articles/turn-signals-blink-rapidly

I have attached the complete wiring for the hazard and lights.

Let me know if you have any questions.

Thank you.
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Saturday, July 17th, 2021 AT 11:30 AM
Tiny
GENE COXIE
  • MEMBER
I have replaced every fuse relay and the switch and still nothing and really don't know how to read the schematics for wiring.
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Monday, July 19th, 2021 AT 8:21 AM
Tiny
SQM
  • EXPERT
Hello,

Since you have replaced just about all the parts and still nothing it is more than likely a wiring issue.
Finding a bad wire in a car wiring harness often requires testing with a volt ohm meter.
It does take a little bit of time to getting used to. Knowing where to look and what to look for is critical.

Here are few helpful articles that might point you to the right direction. It covers the basics of checking a circuit and best practices.

https://www.2carpros.com/articles/how-a-car-electrical-system-works
https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester
https://www.2carpros.com/articles/how-to-use-a-voltmeter
https://www.2carpros.com/articles/how-to-check-wiring

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

Hope this helps.

Thank you.
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Monday, July 19th, 2021 AT 9:23 AM

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