stock cd player

okay...my friend has a '99 civic ex and it has a stock cd player.....when he put the intake in he disconnected the battery for safety reasons. now when he turns the car on the cd player asks for a 5 digit code because of the security theft thing. he went to a honda dealership and they told him it was behind the cd player(5 digit code). well we spent like 5 hours sunday trying to find it. we took like the whole dashboad off. the center console around the shift knob and the cup holders and shit....pulled the cd player out...finally....and there as no god damn 5 digit code. Another friend said you have to get the code from the dealership the car came from and then the dealership said its behind the cd player....who the hell is right??..cause theres no number.....at all....any suggestions would help..