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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 08-20-2005, 03:33 AM
Root Root is offline
 
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Has anyone installed a power break controller for their large trailer on the H3? Any problems w/ the install? Any pics? Which model would you suggest?
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  #2  
Old 08-20-2005, 03:33 AM
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Has anyone installed a power break controller for their large trailer on the H3? Any problems w/ the install? Any pics? Which model would you suggest?
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  #3  
Old 08-20-2005, 11:17 PM
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I have the towing package -- and it looks like there should be some adapter that plugs into the 7 prong connector -- but I can not find the junction box or the wires -- anybody have an idea?
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  #4  
Old 08-21-2005, 01:34 AM
Vincent Vincent is offline
 
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The trailering package for $150.00 is the 7 to 4 pin adapter and a power outlet adapter - see the Hummer website

Don't waste the money though, you can get the adapter at any auto parts store.

I don't have any clue about adding brake controllers
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  #5  
Old 08-22-2005, 09:26 AM
Webb70 Webb70 is offline
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Vincent:
The trailering package for $150.00 is the 7 to 4 pin adapter and a power outlet adapter - see the Hummer website

Don't waste the money though, you can get the adapter at any auto parts store.

I don't have any clue about adding brake controllers </div></BLOCKQUOTE>

You also get the rubber "HUMMER" receiver cover!
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  #6  
Old 08-22-2005, 08:16 PM
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I'm still not clear where the brake controller adapter plugs into w/ the H3. My dealer was unclear and the truck seems to be too new for any of the OEMs to know....
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  #7  
Old 08-22-2005, 09:19 PM
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Welllll........ I just tried to look on the Canyon/Colo. platforms to see if there was hint from them and they don't show a harness or any wiring for a controller.

My stuff might be dated and might be wrong but it might not have a harness to plug into.
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  #8  
Old 08-22-2005, 11:25 PM
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Thanks for the info Paragon -- it seems odd it would have no harness -- where does the cable from the 7 prong plug go???
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Old 08-22-2005, 11:44 PM
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It doesn't show that in the wiring diagrams either.

Try to look under the back and make sure if that there is a Blue wire going to the 7 pin connector.

If it's there look for a loose blue wire under the dash or in the engine bay.
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  #10  
Old 08-23-2005, 05:08 PM
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Here's a shot under my steering wheel. Hummer Customer Care said that my towing package did not come with the hookup under the steering wheel, and that I would have to hardwire it. That seems really silly, although I can not locate where I would connect the break controller too -- so it looks like I will be running a wire to the 7 pin outlet.
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  #11  
Old 08-23-2005, 10:02 PM
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Ok, I'm not getting anywhere. I don't know how the wiring is done in the rear. Maybe check with f5fstop to see if he can find it on the H3 service info.

BTW, what is that red or orange wire that looks cut
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  #12  
Old 11-01-2005, 01:13 PM
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Have you found how to install the controler using the quick connect harness? I to want to install one without having to cut and splice. I havent located the connection yet but they surley have one since there is a 7 pin plug installed with the factory hitch option.
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  #13  
Old 11-01-2005, 04:30 PM
Sewie Sewie is offline
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Check the wires near the light for the footwell. I think I saw some wires labeled for the trailer stuff when I was installing my CB.
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  #14  
Old 11-01-2005, 06:02 PM
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I do think that will work. I had looked under the dash but was looking more to the left where the wire loom came through the firewall. The wires are clearley labled and should be able to wire the controler directley to them, they are labled as follows. black (ground), red (AuxB+), light blue (Brake signal), dark blue (Trailer Brakes). I must make sure that the brake signal wire is on the cold side (ON only when the brake pedal is depressed) and that the red Aux wire has a circuit breaker in line. Thanks for the info it go to show four eyes are better than two.
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  #15  
Old 11-01-2005, 07:56 PM
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You got it. The H3 is supposed to be wired for the brake controller and a trailer hitch wiring, regardless if you get the hitch package from the plant.
For a hitch they are up under the rear bumper in a taped bundle.
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  #16  
Old 11-01-2005, 08:08 PM
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Thanks you guys (oops) and or gals, must be PC are great thanks again
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  #17  
Old 11-04-2005, 12:59 AM
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I did it. It was easy found the four wires clearley labled got a higher end controler because i could spend the labor charges on it. It took about 20 minutes to install. Save your money and do it your self.
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  #18  
Old 11-06-2005, 05:10 PM
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Hey "Grayh3",

I found the wires. They were located in right side between gas pedal and back of Stereo system. My questions is what is the best place to install this brake controller. I understand that they required to be installed horizontal position. Or show us a picture of brake controller installed.
Thanks
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  #19  
Old 11-06-2005, 05:49 PM
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Depending on which type you use makes the differance. I used the proportional type. Tekonsha Prumus. Its a higher end controller but it affordes much more latitude in mounting and is the easiest to set up and and fine tune. I mounted mine on the right side of the steering column so as to keep it out of the way as you enter you H3. Also I am right handed and it makes for easy reach to fine tune Most controlers have a mounting range of areond zero to 70 degrees. I found a load of info at http://www.brakecontroler.com. Hope this helps
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