That's the biggest generator I've heard of in a truck camper!
Have you tried another small appliance with wattage similar to the coffee pot?
I realize it's inconvenient, but at least it WORKS! Most of us have to SHED load to get things to work...
To stand much of a chance trying to help you anybody with actual generator chops would need Make/Model. Please find that and post it here. Most of our card-carrying generator techs have bailed (check smokstak.com) because we weren't posting things like Make/Model.
The more info you can post, the better help you're likely to get.
