I have a USB key in the port closest to the passenger side, a Lightning cable in the other and I plugged in a dashcam in the 12V cig lighter spot. All of a sudden the Lightning cable is providing no power to the iPhone to charge it. Is that expected? The dashcam isn't hardwired yet as we were just testing to see if we wanted it or not, so it's using the 12V spot right now. However, if we wanted to plug in other items in the 12V, then it sounds like we can't charge our phones. Seemed a bit odd. The Lightning cable works fine if there's nothing in the 12V and the USB key and Lightning cable are the only items connected.