Hi. I bought a 2014 Chevrolet Volt, which like many new cars has a USB in, to play music and audio from my iPhone 5s. I love this feature, but mine keeps shutting off. I have Bluetooth but prefer to use this hardwired connection. The port seems very new and tight, not abused at all (only 25k miles on the car), and I occasionally get the Accessory Not Supported message on my iPhone, so I think that may be the reason it inexplicably stops. I want to buy an 'official' USB to lightning cable, that is supported. Can I get this on Ebay? I'm interested in the least expensive one that still works. 3 feet fine, it doesn't need to be long. Thank you sincerely for any replies.