I've got the mopar MUX unit that allows you to use both a cd changer and the sirius satellite unit at the same time on the mopar radios with CD changer control for sale. I bought the mopar Ipod unit and it comes with the mux built in, so I didn't need it. This mux also comes with two cables especially for the cd changer and the sirius units. Theorectically, you could hook two changers or two sirius units up to it but I don't know why you would . Basically, you press the mode button and it switches inputs. On the RB1(which I have), you select AM/FM and then CD-Changer again and it switches modes.

Name your price.

-Kevin