I have a 2000 eclipse gt and i installed the avic-d3 on it myself, I have a friend that has just ordered one for himself and i will be doing the install. I realize that this will be more complicated than the install on my eclipse so i have a few questions. Is there a wire harness that plugs into the stock one that will have my left (+) left (-), and so on? or do i need to find every wire and cut and them all? If they do make this where could i get it? This hummer is an 03 i believe with onstar and bose system. I also need to know about the dash removal, how does the dash come off on the hummer? I know i will probably have to just figure it out myself but if anyone has an h2 and has done this before any tips will be greatly appreciated, Thanks alot.