Connecting iPhone to AUX aside from USB port ?
 

For touring with navi:
I noticed if you plug the iphone into the usb port, you can't control the ipod from there, nor can you get audio to the car speakers from YouTube or any other app.
I have no visible aux port on the dash or center console cubby, except for a 12V and RCA cable ports.
The normal aux cable doesn't fit into the RCA ports so is there some sort of adapter cable I can use on the RCA's or perhaps a hidden aux port behind the Bose headunit I don't know about? Thanks