One way you can do it without the Sterling:Thanks to all to have contributed. Once again I find myself with more questions than answers, the joys of learning all the various van systems!
The goal in my head is to have 110 power available when the truck is running and also have my house system completely isolated from the van system. House battery charges when running, also by solar in the future.
Truck, it sounds like the Sterling will get it done if I also add an inverter. The next question is how do I wire it all up? I don't have the upfitter switches, the only real source of power that I know of is the 3 power points on the drivers seat.