I got the Quadratec wiring harness - plugs in between the 12v outlet on the dash and gives you a fused power source. Used that to power both the dashcam and my wireless phone charger.I guess technically I've got my dashcam wired to the aux wires. Not to the buttons, but to the accessory wire in the aux bundle. So yeah, that too.
Definitely made it easier to wire than having to find a power feed the old way.