My car has a 30 pin adaptor. I use the apple adaptor to get to lightning my iPhone. Cars use USB 1 or 2 specs to charge (.5 amp). Now that is not enough to change my current iPhone. My question is there an adaptor that will allow the data transfer, so I can change song and select artist, BUT has an external USB for power. That way I can use a standard cigarette lighter plug that support higher amp to charge my phone at the same time.