Hi, I read up how to install a dash cam and also road angel and did this by the usual means - piggy back from the fuse box under the passenger glovebox and wire accordingly No problem, it works. The only issue is that the cigar lighter power supply from which it is taken then goes dead. Using the piggyback I have dash cam power but no power supply power, and without it, the power supply works again.
I've done this exercise in several cars and never come across this problem - and yes, I did put a fuse in both parts of the piggy back. I must be doing something really stupid but cannot figure out what. Any suggestions (even impolite ones) will be gratefully received. Thanks