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Only 1 brake light is working, but fuse and bulb are good

Tiny
MOUNTAINFUN22
  • MEMBER
  • 1990 TOYOTA PICKUP
  • 160,000 MILES
It's the left brake light that isn't working. The fuse and bulb are good. The running lights use the same bulb and those work. So, why is the brake light not working? Thanks for any help!
Wednesday, December 7th, 2011 AT 1:18 AM

6 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Check the light socket itself to see if there is a problem. Many times they break down over the years.
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Wednesday, December 7th, 2011 AT 1:21 AM
Tiny
MOUNTAINFUN22
  • MEMBER
  • 7 POSTS
The running light works, so it would seem that it is fine because they share the same socket and bulb. Right?
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Wednesday, December 7th, 2011 AT 1:24 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
They do, but the power for the brake light is supplied through a different section in the socket and the bulb itself. If you look close at the bulb, you will see two elements in it. One is the running light and the other is the brake light. The brake light element only gets power when you hit the brakes.
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Wednesday, December 7th, 2011 AT 1:28 AM
Tiny
MOUNTAINFUN22
  • MEMBER
  • 7 POSTS
Thanks! I'll check it out!
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Wednesday, December 7th, 2011 AT 2:09 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,885 POSTS
Let me know what you find.
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Wednesday, December 7th, 2011 AT 2:57 AM
Tiny
MOUNTAINFUN22
  • MEMBER
  • 7 POSTS
You were right! Is there anything I can do, other than buying a whole new assembly?
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Monday, December 12th, 2011 AT 9:37 PM

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