i got back home fine and with a voltmeter i did some more checking and there is 13V coming out of the batteries, I checked but there’s no 12 V on either size side of the optifuse. The fuse is good as i checked with ohmmeter. There is a one amp in line fuse I also checked it’s good also. the 2000 inverter is turning on fine and turning on the microwave and all the stuff that runs off the AC so it’s puzzling why there is no 12V DC power in the trailer. there has to be a bad fuse or switch somewhere. I am going to try to reach out to OTT but it usually takes them a while to get back to me. any other ideas? could a fuse be blown in the inverter.