hello all, i need your help with a wiring diagram for a 2001 chevy suburban that has the sub woofer and rear controls. i had an after market head unit but it was stolen, now i have no power to any of the wires. i would greatly appreciate it if someone would list the colors of the wires needed to install an after market head unit with out an adapter and retain the factory sub woofer and amp if possible. also, if any one has any suggestion as to what could be wrong with the no power problem? all the fuses are fine, inside and out of the car. thanks guys