I have a Northstar 8.5 Arrow mounted on my 2015 Chevy 2500, 4X4, long bed, single rear axle. A friend told me that when the truck motor is running that it is supplying power to the camper's on boar...
Keep in mind - if you have power at the 7 pin plug when your truck engine is turned off - if/when you kill the battery in the camper (by leaving things on too long in the camper) - YOU WILL KILL THE BATTERY IN YOUR TRUCK!!!!
Install an automatic disconnect or unplug the 7 pin if you think you might run the battery down. You dont want to be out in the middle of nowhere and find you killed the starter battery in your truck.