I have a 1992 Damon Escaper Fifth Wheel. The electrical system is causing me to question my common sense. So I figured, I would try it on here for some of you to direct me. Here is my dilemma: When the shorepower is hooked up, all electrical functions work fine. When disconnected, the battery power should take over and fun most everything, within reason, fine. It does not run anything. I have taken the battery out (it is 18 months old and a deep cycle battery, tested it, and according to the printout at the testing center, it tests fine). What do you think is causing the 12 volt system to not kick in automatically? Any help or advice would be appreciated.