I have a 1999 Ford Explorer Eddie Bauer Edition with the Mach System, CD Changer and Subwoofer from the factory. I wanted to change my radio and I thought that I had the proper wiring harness with constist of the FWH-46 for Premium Sound Harness and the FWH598 wiring harness. The problem is that only 1 of the harnesses fit and the other 2 don't go anywhere. What in the heck else do I need? Please help ASAP !!!!