I picked up this one a few days ago.

https://www.amazon.com/dp/B07DGS11CM/

Not necessarily for the cameras to be recording, but more for the improved rear view when backing since I've got a cargo rack & molle panels restricting my rearward field of view.

I'm planning to wire the power to the camera into the reverse lights so it'll kick on when I'm in reverse.

I used this to tap into the power for the OEM mirror instead of running separate wires under the dash: https://www.amazon.com/dp/B07R7JGCL1/