Hello all and any help is greatly needed.

My Hummer H2 was originally a SEWELL out of Texas H2. If you are familiar they would put on lots of custom stuff then offer them for sale. Mine just happens to have a Fierce Light Bar. Now not sure if something happened or if I just started not driving my Hummer during the summer due to gas friendly car. But I started only driving the Hummer during summer on occasion. After about 7 days I would get in and the battery was completely gone. I took the H2 to my local dealer who I have had nothing but good luck with. This time they stuck it to me. Saying the original dealer had done something with the installation of the light bar and when the cut the power wire to the light bar it dropped my Power draw down to where it should be. After 2 days of them him hawing around they said they would need more money to dig into it and try to figure out how to install it the correct way. I'm calling Bull. So I told them to hook back up and id me in to get the H2. Well I am wondering if any body would have any of the installation instructions for these light bars be able to get me a copy so I can try to get this thing hooked up right myself. Thanks for your time reading and I look forward to hear from some of you.
JC