I have a 2007 Itasca sunova 35J house batteries charge when on shore power as well as when the generator runs, but not when driving. I've looked through the web and found that it's possibly the sol...
There is one relay that connects the two systems together in the battery control center. They are controlled by fuses in the battery control center. The charge circuit could have a blown fuse. Look for battery control center make and model. Post and someone could help. RV custom products fuse #17 or fuse #20 or fuse #22 for rev C