Thanks kodiaq - that clarifies a lot of things! The links are very helpful.
I discovered I'd been given a hard wire kit, complete with a selection of piggy back connectors and the all important voltage dropper - now I understand what all the bits do!
My insurers seem very interested in my having a dash cam, so I'd best get cracking!
Thanks for your time ....... A
Faults and Technical chat for the Skoda Karoq