I had some issues with the display reading excessive DC usage. It turned out I needed to reverse some low volt wires in the Lynx shunt. Now it seems accurate with the coach using about 250watts when all lights and detectors are on and just over 3,000 watts on AC when the two A/C units are running. So far so good. I was told my shunt needed to have been installed on the left of the distributor but I could not do that due to space limitations. One guy said to reverse the wires inside and voila! It's all good! Love FB groups!