Well I was able to get the inverter out and found it had a blown fuse inside. I replaced that and reinstalled the inverter but I still do not have any thing showing on the panel inside the RV to tell me whether the inverter is charging the batteries or not. It is putting out AC from the batteries now but can't tell if charger is charging or not. Seems like I saw a post somewhere about a fuse behind the EMS panel? I know there are three ports on the bottom of inverter (Xantex 1500) and the line going to one of them is a phone line jack which I am sure must go to the EMS but unfortunately I had to unplug it blindly and so I am not sure which of the ports it connects to. Anyone ever run into this?