I have bought a Connects2 CTAADUSB003 to connect to my Chorus 2 in place of the CD changer. There are two wiring looms with it. One I assume is for connecting an ipod and the second for other forms of connection. I'm assuming that the blue connector (on its own) plugs into the multiplug connector I (pins 13-20) in place of the CDC connector. I am not sure however what the white lead in the photo is for. There doesn't seem to be any mention of it in the included instructions, or on the Connects2 site.