This summer 2017 I have been experiencing 12v electrical issues. I have adequate shore power, my batteries are going dead. My converter is getting adequate 118v power, and is putting out 12v at the source, but testing the charging wires at the battery reveals 0v. Somewhere between the charger and the battery, there is a disconnect. Please look at my site for photos, details, manual etc. and see if you have any ideas. Please post your comments here, rvforum.net under this topic. Thank you much for your input.
https://stevenschwarz.wordpress.com/alpenlite-rv-manual/
https://stevenschwarz.wordpress.com/alpenlite-rv-manual/