Hello,
I'm new to this forum and owning a Hummer. I just purchased my first H3 (06 model) about a month ago and love it. Here's my question. Mine did not have a factory hitch. I have installed a hitch and a brake controler inside. In the rear there are some wires (Factory blunt cut) waiting to be hooked up. I'm installing a 7 pin connector. I need to know what the blunt cut wires are (White, green, brown, and yellow)

If there is a schematic avaliable out there that would be great.

I did try to use the search without much luck, probally my error.

Thanks in advance for any and all help.

 

This site will give you all that information. I just put a brake controller in my non-factory hitch Silverado this weekend, so lucky I had this at hand. LINK --> http://www.horsetrailerworld.com/home/wiring.asp

 

Thanks 08H3. I still have a delima. Inside the Hummer there were the four wires for the brake controler blunt cut waiting to hook up. At the rear of the vehicle I don't find the Blue wire for the electric brakes only the standard white, green, brown, and yellow. Does anyone know if the blue wire is somewere at the rear of the vehicle as well, or do I have to run it?

 

I am fairly certain that the wire is there. You may have to peel back some of the tape / covering on that harness, but I think it is in there. As I posted in another thread, I am just basing this on what I have read, not first hand experience so I hope it works out for you. For what it's worth, that's the way my Silverado was. The white, brown, green, and yellow were exposed, but I had to peel back the tape to expose the red and blue.

 

I'm new here. Are there any GM mechanics or experts of anykind on this forum that can give any insite here. The Blue wire under the dash for the electric brakes, where does it go from under the dash, the fuse box, hidden in the wire harness somewhere??? I know I can run the wire, just don't want to if it is already somewhere waiting to be hooked up.