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Go Back   Hummer Forums by Elcova > Hummer H2 Discussion Forums > Technical Discussion and Customizing your H2

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  #1  
Old 04-21-2010, 04:03 PM
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ROUSHDEMON ROUSHDEMON is offline
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Default Brake lights no worky

So I bought a trailer yesterday and bought the 7-4 adapter for the trailer lights and noticed that my brake lights weren't coming on
All the lights work great, turn signals work fine trailer and all, but not the brake lights, I can actually Hear a clicking sound underneath the shifter or "cup holders" when I hit the brakes... like a funny... "CLICK!" and the brakes dont come on...

Has this happended to anyone????
Doesn't sound like a fuse... I dunno.

Thanks in advance.
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Old 04-21-2010, 04:33 PM
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Default Re: Brake lights no worky

call me....
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Old 04-21-2010, 05:39 PM
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Default Re: Brake lights no worky

FYI... The Brake lights dont work on the Hummer, forget the trailer..... The Hummer brakelights are not coming on...
Thanks for helping out Eric.
I'm going to check the wiring on the trailer but now even with the trailer unplugged the brake lights dont work on the truck at all.


Thanks!
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2003 Black H2:
Blacked out,7" lift,40" Pitbull Rockers, 20x12 Fuel Octanes and lots of more junk, DemonGuard Brushguard
2006 Blue H2:
20x12 black Rockstars & 35"s. missed.
2005 Black Mustang Roush Stage 1 #05-1058:
Showcar, Procharged 580HP, 20" Gianelle's, Prokit, 1/8 in 7.56secs.
2009 Silver Cadillac CTS Premium
White interior, lots of future mods.

Last edited by ROUSHDEMON : 04-21-2010 at 08:06 PM.
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Old 05-03-2010, 10:15 PM
Lucky1 Lucky1 is offline
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Default Re: Brake lights no worky

I have the same exact problem. Does anybody know the fix for this because I can't even drive my truck.. Thanks in advance.
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Old 05-04-2010, 03:14 AM
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Default Re: Brake lights no worky

may be a blown fuse
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Old 05-04-2010, 05:58 AM
Lucky1 Lucky1 is offline
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Default Re: Brake lights no worky

I checked both fuses, in the cab and under the hood. Both were good and now I'm lost. I'm trying to see if RoushDemon figured it out because he has or had the same problem. Thanks tho CBR.
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Old 05-05-2010, 04:32 AM
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Default Re: Brake lights no worky

try your relays in your fuse box. that was my problem.
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Old 05-08-2010, 05:09 PM
Lucky1 Lucky1 is offline
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Default Re: Brake lights no worky

I found my culprit and it was a broken wire from my aftermarket alarm that was soldered to the brake lamp switch under the dash. I think had it not have been a broken solder it would have definitely been the brake lamp switch. Thanks guys for all the help.
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