I have a Blackvue 650s in my '19 Platinum that uses the Power Magic EZ. It plugs into the OBD2 port. Works great in my opinion.

 

My OBD port is already crowded, so to speak and I've not had any issues with my current use of a constant power fuse block. I'm simply going to change to one that's switched to give the battery and the alternator a break.

 

All the options of power for the cams are good, but if you’ve got a wifi model, I think in the settings theres an option or a timer for it to actually shut down anyway, its kind of a precaution so the battery won’t be in danger of losing too much.