All of blackvue dashcam's require less than 1 Ampere current to power on, therefore a fuse tap between 1 Ampere (minimum) to 2 Ampere (maximum) can be used to hardwire dashcam to car's battery.
Blackvue provides following 3 types of fuse taps to connect the Power magic pro to your car's fuse box.
Compatibility of fuse tap with your car's fuse box can be affirmed with the car's manufacturer or dealers (some car's have this information in the manual)
Fuse tap: ATO fuse
Fuse tap: Low Profile mini Fuse
Fuse tap: Mini Fuse
Following is the technical specification of fuse taps above
You can also watch the video below on how to identify your fuse type.