Hi having a spot of bother with my 12 volt power socket whilst hard wiring a new dash cam after my old mi wittiness packed in only 2 years old, using the same fuse holders I have lost power to my 12 volt sockets the fuses are okay tested with my multi meter no power in or out of the fuse holder or have blown something somewhere else? any ideas would be appreciated.

Check the fuses in the engine bay fuse box, and the link fuses in the same box.