Hey All...my second post of the day requesting advice. The first go-around worked pretty good so here goes # 2. I'm building a roof rack that also has an integrated light bar and wondered the best route for the wiring...I know there are oem light bars and marker lights for the H3 and assume the wiring goes into the plastic roof edging, but where from there? Is there a hole for the wiring to get down into the vehicle? What is the procedure for removing the plastic edging on the windshield pillar?

I'd like to send the wiring through the light bar and out the bottom of it's base. It will sit in the center of the plastic roof edging just behind where the seam is for the plastic windshield pillar edging. I've included a couple photos for clarification.

Whew...Thanks for your input!

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nice work!!! As far as running the wires, take the o chit handlesoff from inside teh truck and work the door trim ff...held on by some clips,from there you should see how the wires will have to run. There is a channel that you can run the wires in...if memory serves.

 

Do I have to drill through the roof or is there an an access hole?

 

that I cannot help you with.....but either way it's no biggie...I would assume you have to drill through the roof.

 

I've heard there is an access hole on the H2...was hoping the same for the H3...

 

go to the search function and type in H3 off orad light install. 4-5 threads are there and a couple might be helpful to you. Several didn't look to have any good Post and let us know how it turns out. Nice looking rack and light bar.

 

type in off road. damn fat fingers....

 

Thanks 3hummers...but no real detailed info there..bits and pieces...just don't want to drill a hole in my roof if I can help it...someone must know where the wires run for the factory light bar???
Where are you??

 

I installed the SMA light bar and you do not drill thru the roof on the H3! You drill thru the plastic molding and you add a piece of metal under it for support ! Heres a link with some pics of the pieces https://www.hummerforums.com/m_115357/tm.htm as far as the wiring you remove the Molding from the wind shield and run the wire into the engine and thru one of the plugs in the firewall! No holes to drill!! I also installed the factory light bar and the wires go in the same location.

 

First, I don't know if this will work or not. But check out the audio/visual area on here. I was reading a post about someone switching to Sirius and the ran the wire for the antenna down beside the windshield and through the firewall where the hood release cable goes through. He put some really good pics to help. Different subject I know, but same issue (wires). Might work https://www.hummerforums.com/m_69805/tm.htm
Let us know.