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Go Back   Hummer Forums by Elcova > Hummer H3 Discussion Forums > Technical Discussion and Customizing your H3

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  #1  
Old 02-27-2008, 11:14 PM
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Question mystery wires

on my 2007 h3 there are three separate sets of wires coming off of the main wiring harness from the fire wall that are taped off and go no place.Does any one know what they are for,and where they go ? I am planning on putting some lights on the brush guard and was wondering if they ran to the factory spots on the dash for dealer installed lights.
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Old 02-28-2008, 01:42 AM
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Default Re: mystery wires

There are wires there you can tap into...
Use the search pull down try entering lights or lamps and see what you find
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  #3  
Old 02-28-2008, 04:26 AM
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Default Re: mystery wires

wiring provisions for the factory off road lamp package.

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Old 02-29-2008, 02:02 AM
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Default Re: mystery wires

???????????? I see nothing
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Old 02-29-2008, 02:19 AM
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Default We were just talking about this at work today.

CUT THE RED WIRE!
Have you ever noticed which wire they cut in the movies when defusing a bomb?
It's always the red one.
Don't "F" with the blue wire.

Last edited by Vettster : 02-29-2008 at 02:26 AM.
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Old 02-29-2008, 04:53 AM
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Default Re: mystery wires

What colors are they? There's a couple different things they could be. One bundle that I know of is for trailer brakes.
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Old 03-08-2008, 11:42 AM
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Default Re: mystery wires

The wires nearest the accelerator pedal are for a brake controller. The wires near the e-brake are for the roof mounted and lower grill mounted off-road lights.
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Old 03-12-2008, 11:04 PM
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Default Re: mystery wires

I was talking about wires under the hood , not under the dash
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Old 03-12-2008, 11:27 PM
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Default Re: mystery wires

Post pic's
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Old 03-13-2008, 01:20 AM
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Default Re: mystery wires

They are the other ends of the wires for the offroad lights. I have installed both the upper and lower offroad lights. These wires just go through the fire wall. When you install the stock offroad lights the harness that goes to the lights and fuse box connect to the wires under the hood and the switches hook to the other ends of these wires under the dash.
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Old 03-13-2008, 11:22 PM
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Default Re: mystery wires

GIVE PARTSMAN A CALL FROM MWHC AND I CAN HELP WITH THE WIRES, I HAVE THE DIAGRAM.
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Old 03-14-2008, 02:02 AM
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Default Re: mystery wires

Thanks I will stop in
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Old 03-17-2008, 11:19 PM
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Default Re: mystery wires

Quote:
Originally Posted by trailerpup
They are the other ends of the wires for the offroad lights. I have installed both the upper and lower offroad lights. These wires just go through the fire wall. When you install the stock offroad lights the harness that goes to the lights and fuse box connect to the wires under the hood and the switches hook to the other ends of these wires under the dash.

This guy is right.
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