WWW.GOODYLED.COM - i had a buddy who is a technician at a Chevy store install it for me. He hardwired it to the 7 pin trailer hitch for a clean install. Highly recommend going this route as opposed to using the 4 pin that comes with the light bar.
I do have a public service announcement concerning our trucks and this install however, the rear camera is hardwired just above where the bar sits, it means that the bar cannot be exactly centered above the bumper and below the tailgate. Also, there is a plastic mounting bracket that runs 3/4 across the width of the truck. Unless you get down eye level with the tailgate, you will never see it however for this install, it does mean that the ends of the bar are not flush with the truck and you must find some way to make them stick. I used gorilla glue super glue and it works perfectly! I did not know this when ordering and just wanted to pass along the information. Other than that, I am very happy. The bar is ridiculously bright and I feel it makes a huge difference in traffic and in tight quarter situations like parking lots etc... I use my truck to transport my 4 year old daughter and i have noticed that i have not had people ride my *** like they used to. I attribute this 100% to the light bar.
If you are thinking about doing it! DO IT! highly recommend.