First question. Why do my 12 volt lights get brighter when I plug into shore power? Next question is if I tap into my 12 volt reading light in the bedroom can I use those wires to run a pig tail to in...
Keep an eye on this. Test your batteries and converter. Sounds like your converter is OK but your batteries are struggling/weak. If the batteries are week, they will continue to fail and faster ass they get weaker.