Well, if you change your mind and want better quality, here is how to make the cable - I just picked up the components from Fry's yesterday. (attachement), I will use an old RCA audio cable and solder it to a connector for the back of the radio and to an AUX connector I plan to place in the ashtray. I also ordered the Belkin AirCast w Bluetooth and will connect it to AUX and place the button somewhere on center console.
Amazon.com: Belkin Bluetooth Car Hands-Free Kit for Apple iPod, Apple iPhone, BlackBerry,and Android Smartphones, US Version: MP3 Players & Accessories