I have a 2003 Tahoe LT full load auto leveling roof so no DVD. I want to put one in for my 4 year old. Now I had my battery replaced last Dec. and it was a interstate with 600 CCA so I would like to make this the second one and get the right one for my main. Now I will need some sort of setup to make this work. I was a GM salesmen for ten years and sold mostly new but I forget how the 2500 were setup. Any help to do this job on the cheap would be apreciated. Thanks Eric