# Changed a blinker light, now brake lights won't work either

**URL:** <https://community.cartalk.com/t/changed-a-blinker-light-now-brake-lights-wont-work-either/126556>\
**Category:** Maintenance/Repairs\
**Created:** [October 11, 2018, 4:59am UTC](https://community.cartalk.com/t/changed-a-blinker-light-now-brake-lights-wont-work-either/126556 "2018-10-11T04:59:24Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![jt\_3232\_143143](https://avatars.discourse-cdn.com/v4/letter/j/47e85d/32.png) [@jt\_3232\_143143](https://community.cartalk.com/u/jt_3232_143143)\
**Post date:** [October 11, 2018, 4:59am UTC](https://community.cartalk.com/t/changed-a-blinker-light-now-brake-lights-wont-work-either/126556/1 "2018-10-11T04:59:24Z")

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Hi, my blinker wasn’t working on my right side rear lights on my 1990 chevy 1500. I knew this because it was blinking fast and had someone check it. I took the housing out, replaced the blinker light, then replaced it, and the whole thing wont work, including brake lights. Now I went back and replaced another bulb that looked broken. All to no avail. Any ideas? I did disconnect the wires and re connected them afterward.

I replaced a 3156 bulb with a 3057, is that okay?

Thank you very much.

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**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:** [October 11, 2018, 10:46am UTC](https://community.cartalk.com/t/changed-a-blinker-light-now-brake-lights-wont-work-either/126556/2 "2018-10-11T10:46:56Z")

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> [@jt\_3232\_143143](#):
>
> I replaced a 3156 bulb with a 3057, is that okay?

No

The 3156 is a single element bulb

The 3057 is a double element bulb

They are not interchangeable