I have a 2015 and I'm going to go with a Thinkware F790 2 channel setup. I like the fact that it goes into low power parking mode when switched 12v is off. This will allow cameras to only record if motion is sensed around the car and or an impact. I know there's a 12v constant source above the rear view mirror in the grill but I do want the switched 12v also, so I'm going with a different location to tap power. Anyone have any experiences to share wiring this way? Any issues with low battery voltage?