I just installed my new kenwood ddx 318 and everything works well except i have no sound when i hook up my iphone with the regular usb cable that came with the iphone. i was wondering if i have to have one of the kenwood cables before this will work? i hope i didnt do something wrong when we installed it. it shows its playing on the face but no sound. my car is a 2010 chevy malibu base model. does not have onstar or sat. radio.
