Hopefully I'm explaining this correctly, The automatic transfer switch (ATS) in your coach won't allow you to back feed generator power through the shore cord - the shore cord is disconnected by the relays in the ATS when the generator runs. But you certainly could add a power tap where the generator connects to the ATS and use that to feed power to an entry point. Basically you want a 50A power outlet on the coach and the house and connect them.