I have a 12 disc player 16199553 in my 1998 camaro and this model Delco radio. The radio has the 10 pin plug. When I plug in the harness into the radio, the CD player will cycle through the loading procedure, but it does not show on the radio, nor does seem to indicate the presence of the 12 disc player. The built in CD player on the radio works fine. Is there some programming required on the radio?