Yes they do, Blackvue has something similar but these are for ICE engines so the dash cam will not drain the battery if the alternator is of (engine off). The EQV should not need this because in theory the 12V battery is charged by the main battery (should run the dash cam for a few years non stop!). There is a fuse box on the passengers feet area but you need to find out which fuse is live when the ignition is off and the hardwire the dash cam (piggy back fuse) and attach grounding to bare metal. I was planning to do this but the OBD cable works. Dachcam batteries again are useful for ICE cars and they will be drained if the car is parked for a long period of time. The Blackvue battery system is also fused but I have the latest model (900 Xseries) which has internal fuse for protection so this is not necessary. Be careful if you buy the OBD cable X series this may not suitable for older models (for the above reason) therefore you need a different OBD connection.Well done. I think some dashcam models have their own in-built battery and/or settings for changing 12v battery drain cutoff point and I think Blackvue would be like this. I know little about wiring but EQV manual suggests you should have got a separate "Fuse allocation chart" supplement, for if you were wiring directly to the fuse box else the rep should be able get this information. Wiring to 12v socket might also work with a dashcam in-built battery to prevent power cutoff