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Car Forum / GMC Cars / August 2006

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Brake Lights won't work when headlights are on

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Shawna - 06 Aug 2006 17:23 GMT
I drive a 1988 C1500 recently have noticed that the blinkers were flashing
quicker than  usual which usually is a sign that you have a blinker out,
checked them all no problem.  Then I finally figured out that when my
headlights are on I have no brake lights, when my headlights are off I have
brake lights.  Completly dazed and confused if any one can help out I would
greatly appreciate it.  If needed you can email me at ShawnaCDA [at] aol [dot]
com

Thanks in advance

Shawna
grockswo - 10 Aug 2006 00:21 GMT
> I drive a 1988 C1500 recently have noticed that the blinkers were flashing
> quicker than  usual which usually is a sign that you have a blinker out,
[quoted text clipped - 7 lines]
>
> Shawna

Sounds to me like there is a bad ground, basically the difference in
resistance between the parking lights (those that are on when the
headlights are on) and the brake lights will allow one to work and then
the other, but not both.  Check the ground wire and make sure the bulbs
are getting a good connection to ground.  I have the same truck, only
4wd, had troubles with my tail lights for a while, sockets were not
making good connection.  That should fix your problem.

Gus
Shawna - 10 Aug 2006 01:32 GMT
Thanks for answering my problem Gus, the only thing is, I don't know much
about fixing things, could you tell me what the ground wire is and where it
is at?

>> I drive a 1988 C1500 recently have noticed that the blinkers were flashing
>> quicker than  usual which usually is a sign that you have a blinker out,
[quoted text clipped - 11 lines]
>
>Gus
Mike Marlow - 10 Aug 2006 03:28 GMT
> Thanks for answering my problem Gus, the only thing is, I don't know much
> about fixing things, could you tell me what the ground wire is and where it
> is at?

Ground is the black wire.  If you're really this unfamiliar with repairs
you'd be better off taking it to a shop to get it fixed.

Signature

-Mike-
mmarlowREMOVE@alltel.net

 
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