I have an pioneer Avic-X910BT in my car. I used to have an iphone 4 and would simply use an AV cord with a 30 Pin adapter to connect my phone and play music. Now I have an iPhone 5s. I tried using a lightning adapter to connect but it doesn't work. I've searched online for other cords to use but haven't found an AV cord that has a lightning charger on the end. Any solutions? I don't need full iphone functionality while plugged in, I simply want to play music through the stereo system.