So I installed the street guardian SGZC12RC yesterday and used a 12v cigarette adapter I had already wired to a constant powered fuse under my dash. I plugged the 12v plug directly into this. I am getting a check alternator alarm when I first crank my car but voltage looks normal and is not running battery down. I am going to check voltage before cranking but I have had low batteries before that would not crank and never got this message. Is there something in the dash cam doing this? 2006 GTO