I have a 2007 RX-8 with the stock radio. I have the dealer added iPod connector. I want to add a Sirius radio car kit. Is there an easily accessible aux port so I could connect the Sirius dock to the radio? Is there a connector I could use with the iPod plug? I am not very tech savvy but can do a little on my own. I'm just trying to figure out how I can connect to the car without buying the kit the dealer told me was available for $600. Thanks in advance for any help.

Robin