I ended up tapping into the fuse box using an add-a-fuse to power mine, with a ground to the dash support. If you’re adding more equipment like a camera with 360 view later on, it’s worth planning ahead for extra power needs. Check out https://www.insta360.com/blog/tips/360-car-camera-insta360-x4.html first.

I also routed the rear cam wire along the headliner and down the passenger side—super easy and keeps things looking clean.