I purchased a 1998 Explorer Sport w/o Manuals. The radio in the dash is a cassette unit w/o a CD button. There is a 6-disc changer in the console. Behind the console there is a pad which controls the radio and also has a mode button. I can make the display on the radio say TRACK 00 with the mode button but nothing plays. I am wondering if the right radio is in the dash. It seems strange that Ford would make a vehicle that you had to turn around behind you to operate. Nay help is appreciated.