One thing they missed on PDI of our Aerolite, when plugged in, it would not switch from gas to Electric, on our first run we pulled the exterior back panel off to look to see if it was plugged in. There was no apparent plug, so we figured it was hard wired. First trip out this year, and we had a lot of condensation build up in the tray, so off came the exterior panel again, just a twist of the hose and out came the water, fugured I would take one more look back there for that nasty plug. shure enough, found it, plugged it in and what a wonderful sound to hear it switch off thet expensive propane! Boy did they hide that plug well!