This one is strange. After recently installing the following: a new chassis battery, two new NAPA's best RV batteries, a new 120 amp isolator and a 60 amp Intellicharger with remote Wizzard, I experienced this situation. Last night, with all batteries charged and the shore cord pluged in, the 345 sat overnight with one furnace on and the isle lights on. This morning, the isle lites were very dim and there was not enough power to turn on the control panel to check battery condition. I attempted to start the coach which it did normally. I then turned the engine off and the isle lights were bright and everything functioned normally. I'm at a loss as to what could have caused this situation. I question that the isolator was hooked up correctly. Aside from that does anyone have a suggestion? Has anyone else had this happen?
Thanks for your input!