I have a 05 with plug and play deck cd player craped out .SO tring to install jvc deck .I bought wiring harness of ebay but it came with 6 brown wires that my deck doesn't have.hooked all other clor coded wires up and i get nothing. It will turn on for a couple of seconds and turn back off ?? it doesn't have onstar.PLEASE HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

You will need to run a power wire from either the ignition or from the backseat fuse box