We think it is electric because we found a plug for it under our sink. We tested that outlet and it works we see no other switch so we were going to just try it on propane once we get to the campground. However our pickup just has a mechanical situation so we are turning around and heading to our mechanic. It has not been a good day so far. Thanks for your suggestions , once we have camper set up we will search for that elusive switch or go to propane. If it is helpful to anyone, we have a rock wood ultra lite signature 8282 WS.