I added a switch on mine in order to turn on and off from inside. I leave the switch on th water heater on . The cord for mine plugged in under my entertainment area. I removed a panel and wired the switch in line.
2011 F350 Lariat Ultimate Dually 6.7 w/ B&W Companion
2014 Heritage Glen 356QBQ
2016 Explorer Platinum, 1998 Mustang
1SG(Ret) (1987) US Army Aviation
Days/Nights Camped 2016: 34