my scosche adapter worked perfectly. i would get behind there and pull it out to compare the wire's but mines a dvd player and the controller is in the dash too so its to big of a hassle. you are sure your wires are correct?
the hardest part for me was getting the stock unit unplugged. i had to pry the harness out with a screwdriver because the son of a bitch only had a 1/4 inch of slack. i dont even wanna get started on how hard it was to put the stock headunit back in. other than that its just plug and play. i think something must be wrong with my headunit cause only my left speakers would come on but it works fine with the stock one in. $30 shipped for the harness if you are interested. i'm giving up on mine