Which fuse panel and #'s did you end up using?
How did you pull the A pillar covers off? I ran my camera feed along the passenger (right) side ceiling, but I ran the power on the driver's side down that A pillar to the ignition fuse panel. Routing that cable without removing was no easy task.
I tapped rear 12v socket 15A fuse for ACC and “clock / logistics” 5v fuse for batt +. I grounded on the bolt that attaches the brake pedal to the frame. (There are 4 big bolts, used bottom right so I had enough length. You can’t ground to bolts that are painted.
I did not remove A piller trim. I used the little orange tool to pry it back just a little to feed wire behind and conceal.