Earlier this month my wife and I were boondocking in Eastern Washington. The weather forecast called for cold blustery conditions. Turning the furnace thermostat up in preparation resulted in cold air blowing out of the furnace duct. Thinking the batteries might be low, I started the generator only to find it wouldn't stay running due to low oil. I had oil for the generator, but no funnel! Well as any seasoned boondocker would do, you think like MacGyver (if you are not familiar with the adventures of MacGyver, visit: http://en.wikipedia.org/wiki/MacGyver ) and find whatever might work for your situation. The best I could come up with was the antifreeze pick-up hose for winterizing the RV. With the generator now running, I soon realized that low batteries were not my problem. The problem was with the furnace itself. Of course, the manufacturer of my RV was too cheap to install the outside access panel when they built the rig, leaving me to diagnose the problem through the small vent holes in the top of the furnace. By using a pair of long nose pliers to pull wires through the furnace vent I was able to determine which part was bad by jumping the circuit with a paper clip just like MacGyver would. Borrowing (MacGyvering) a length of wire from my wife's ATV soon had the heat restored. MacGyver, you're my hero!