I just purchased a 2006 wildcat 29RLS bumper pull. I work in the oilfield so I'll be living out of it full time. In my previous camper (a borrowed rebuilt FEMA) I used space heaters through last winter that worked out really well. Temps ran from the 40's down into the single digits during super cold times. It had an extension cord plug stubbed up through the floor so I was able to run 4 space heaters, two on the trailer power and 2 off the extension cord. I would like to do the same with this trailer, but I would prefer to install a box on the outside to plug an extension cord into with a breaker and plug on the inside. Has anyone done this, and if so what type of box and parts do I need to get? This would be my preference for heat because I get electricity for free with my job. Thanks in advance!!!