Lance is about the only camper that I know of that has an isolator built into the campers and I don't know if it is an options or a standard build. AF does not have one. The battery disconnect shuts off the 12VDC to the camper for long term storage. It depends on your truck make if it needs an isolator or not. Ford shuts off the power to the charge line when you shut the key off. Chevy and Dodge do not. So if you leave the TC plugged in it can run down your batteries. If you have a GM or Dodge you can just unplug the line from the truck to the camper when you are going to be using the camper for a period of time without running the truck.
It is better to use a constant use solenoid under the hood to shut off power when you shut your truck down.
