I've looked for a bad ground and I looked for corrosion. The only thing I found was that the contacts had been wet. I blew it out and sprayed some electical connector cleaner. It worked once or twice or for a little while. I may just redo the whole thing and include the interior and battery back up etc. Is this expensive and is there a recommendation other than just running bulk wire? i.e. does someone like Painless make something specific?