Custom Autosound USA 6

Anyone out ther got one of these radios installed? I would like to run proper wiring from the radio to the rear of my car in order to connect a CD changer. There are 2 RCA connections which I have extended to the rear but I see a DIN like connection on the back of the Radio. Does anyone know if this connection needs to be run to the rear as well? I am just in process of reinstallation and would appreciate any insight into the above Many Thanks Runamuck