# 2003 Ford F-150 brake lights

**URL:** <https://community.cartalk.com/t/2003-ford-f-150-brake-lights/169453>\
**Category:** Maintenance/Repairs\
**Tags:** ford, f150\
**Created:** [September 1, 2020, 6:50pm UTC](https://community.cartalk.com/t/2003-ford-f-150-brake-lights/169453 "2020-09-01T18:50:20Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![bbrown12440\_170440](https://avatars.discourse-cdn.com/v4/letter/b/d9b06d/32.png) [@bbrown12440\_170440](https://community.cartalk.com/u/bbrown12440_170440)\
**Post date:** [September 1, 2020, 6:50pm UTC](https://community.cartalk.com/t/2003-ford-f-150-brake-lights/169453/1 "2020-09-01T18:50:20Z")

</div>

Brake lights stay on when running lights are on but work properly if the passenger blinker is switched on, the blinker does not it just stays on. Lights and blinker all work fine if running lights are turned off

---

<div class="post-metadata">

**Author:** ![It\_s-Me](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/it_s-me/32/12660_2.png) [@It\_s-Me](https://community.cartalk.com/u/It_s-Me)\
**Post date:** [September 2, 2020, 12:55am UTC](https://community.cartalk.com/t/2003-ford-f-150-brake-lights/169453/2 "2020-09-02T00:55:00Z")

</div>

Reads like you have a bad ground.  
Also, If you have a trailer plug on your truck, make sure the wires to it are not rubbed bare, usually around the trailer hitch, especially if your plug wire is wrapped around it.

---

<div class="post-metadata">

**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\
**Post date:** [September 4, 2020, 1:26pm UTC](https://community.cartalk.com/t/2003-ford-f-150-brake-lights/169453/3 "2020-09-04T13:26:18Z")

</div>

Duplicate post. Everyone who can read this can also read the earlier post, @bbrown12440_170440 bbrown. Did you not like the answers you got?

> [@Brake light propblems](https://community.cartalk.com/t/brake-light-propblems/169454):
>
> Brake lights stay on when running lights are on but work properly if the passenger blinker is switched on, the blinker does not it just stays on. Lights and blinker all work fine if running lights are turned off