My new to me 2018 Connect has synch 3. There's a 12v power supply in a cubby above the clocks right next to my phone bracket, which would be great except that it seems only to be able to charge the phone and not supply the necessary interface to run carplay etc. To do that, it seems I have to use the usb under the central armrest. Not ideal, as that means running a very long cable all the way from there to the A pillar in order to have the phone where I can see it and make everything work.
Any idea why the 12v power supply with usb adaptor won't allow this? Is there something special about the usb under the armrest, supply wise?