Hey guys I need some help. Ive had my expy a couple months now and im bored with the sound system. Ive got an 04 with the factory nav and I was thinking of either upgrading to the 06 oem nav or going aftermarket. I want to keep the overhead dvd for the kiddos and all my steering wheel controls aswell. Im seeing its hard to find harnesses for this thing !! anybody have a solution !! thanks