My wife and I went camping to our favorite RV park in Lyndon Station Wisconsin, my sister met us there for a weekend of relaxation and visit. During the first nights stay we were suddenly woke by a smoke filled bedroom/bathroom. Got up and flipped light on and our bedroom was filled with smoke immediately my wife heard a buzzing noise and then the sound of light switch being flipped off hard. I immediately woke my sister up in the front of the coach. Opened the door to get fresh air. Its 1:18 in the morning. Searched frantically for the source, had extinguisher ready. Opened every compartment underneath, the very rear of the RV has storage underneath. The smell of burning wires were strong in that comapartment. Removed side panels in compartment and found on the left side a outlet mounted to the floor had started on fire, cause was the shower drain had leaked without knowing and water had dripped right on top of the outlet that was mounted directly underneath the drain line. The outlet was for the hot water heater, burned the outlet completely melting the outlet and the metal inside the outlet.( Have pictures of all of it) and still have the outlet. Could have been overtaken by the smoke but thank god we werent! Firealarm never went off, battery is replaced yearly. We had only owned the camper a couple of years. Called Camping World in Little Falls, MN they have gave us the run around, told us to call Forrest River no response back. Called CW again nothing but run around for