So I have a kenwood kvt815 DVD in my impala and I can't seem to find the right kenwood wire to make it work. I'm my other tuck I have a kenwood ddx714 and the iPhone 4 works fine with kca-ip301. I tried the 301 and now the 302 in the impala and still nothing. All I get now is the phone to charge but doesn't trigger iPhone to go to iPod mode. At all. Just says disconnected. What gives? According to the kenwood site they say there is no wire for it in their search. Is this a wash and is there no way around this? Will I need a another module?