hello all, I just bought a 2004 t&c limited, it has a dvd player in the dash, but does not have the screen on the headliner of the car, is this common? or did some change out the screen? it does have the air and temp control on the roof, don't understand this, I don't have an owners manual for this car, so I can't check it out, does anyone know what this is? thanks for your help