The fuse panel on a 2018 Kia Sorento can be found on the driver's side, just underneath the instrument panel and behind a cover located below the steering wheel. The BlackboxMyCar PowerCell 8 hardwiring kit requires a 2-wire cable, one for ACC (constant power) and the other for ground.
To hardwire-install the BlackboxMyCar PowerCell 8 battery pack, you should look for an empty fuse slot or one that can be piggybacked off of using the add-a-fuse kit that comes in the BlackboxMyCar Essential Install Kit. Use the circuit tester in the Essential Install Kit to find a suitable continuous power fuse less than 10A. Always refer to the Fuses section in the vehicle's owner's manual to avoid any fuse slots reserved for safety features within the car.
Once hardwired, the BlackboxMyCar PowerCell 8 battery pack will recharge when the ignition is turned on, and the dash cam will be able to draw power from the battery pack to run parking mode when the car is powered down.