I have been looking for a potential way to hard wire my radar detector into my 2017 LT. It has the standard mirror and OnStar in the ceiling. Think there is a way to route a wire and pull power from the OnStar? I'm about to email MirrorTap and see if they have anything.
FYI I am looking to do this because I'm not a big fan of sending wire through the A Pillar and maintaining a clean appearance while minimizing clutter.
Has anyone done the wiring? Photos?