2003 Ford Ranger Turn Signals Light With Brakes

FORD RANGER
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KVPOLL
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  • 1 POST
When I step on the brakes the right directionals light up solid with the brake lights. The bulbs all seem to be intact. Is it a ground? Is it a Switch? If so where? 2003 Ford Ranger.
Mar 10, 2006 at 1:09 PM
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2CARPRO BOB
  • ✓Experienced Mechanic
  • 45 POSTS
You are apparently getting feedback from your brake light circuit to the turn signal circuit. Verify that the taillight bulbs are the correct ones for your car. If your car is equipped with a wiring harness for a trailer verify that it is not shorting out between connections. Here are brake light wiring diagrams and a guide to help check the wiring so you can see how the system works and how to check the grounds.

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

and

https://www.2carpros.com/articles/brake-lights-not-working


Check out the diagrams (Below). Please let us know what happens.
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Jun 2, 2021 at 6:51 AM
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KVPOLL
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Thank you so much 2Carpro Bob, the problem was a bad ground left front of the vehicle floor like you said you must be a very smart man, I bet you family is proud of you.
Jun 2, 2021 at 6:51 AM
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Suggested Repair

Repair the bad ground at the left front floor. Also verify the taillight bulbs are the correct type and that any trailer wiring harness is not shorting the brake and turn-signal circuits.

Conversation Summary

On a 2003 Ford Ranger, the right turn signals lit solid with the brake lights when the pedal was pressed. The expert said brake-circuit feedback was reaching the turn-signal circuit and advised checking correct bulbs, trailer-harness shorts, wiring, and grounds. The owner later confirmed a bad ground at the left front floor was the cause.

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