Testing Systems, Thermostats, and Leaky Propane - Part I

We have been fairly busy the last few weeks, learning how the motorhome works, testing systems, getting the home tuned up, and figuring gas mileage.
It seems all of the fluids were either low or non-existant, so that was quickly rectified by my handy dandy husband. We booked an appointment with our favorite mechanic to give the engine a quick going over, and have the plugs and rotor changed out. Once that was done, the propane tank was filled, with the intent to test all propane systems. But, after the tank was filled, it seemed to develop a leak. I mean, propane spilled out right there, and would not stop for some time. Finally we got it under control, and chalked it up to a stuck valve that should correct itself. As it turns out, the issue did not correct itself. Over the past few weeks we have had propane leaking off and on. So, we are having the issue investigated by professionals as we speak.
Regarding the propane systems, we have sucessfully tested the stove top. We tried lighting the propane on the fridge, but so far have had no success. The oven has not been tested to date. The motorhome also has a propane furnace in it. And with the cold weather we have been having over the past few weeks, that system was definitely tested. The cover was taken off the interior furnace vent and we looked for the pilot switch and place to light the furnace. Neither my husband nor myself could find either. We took the 'basic instruction' pages that the motorhome was kind enough to come with, and read them over. I looked over the area behind the furnace vent. I read the extremely tiny writing that was the instructions on the furnace, including the words that said 'if your system has this' and 'if your system has that'. Then I went to the internet. I googled motorhome furnaces, and I viewed youtube videos on the subject. Then one video mentioned the fan, and talked about a switch that would turn the furnace on. At this point we decided to see if the fan worked on the furnace. So, we turned the furnace on, we flipped the switch on the thermostat to the left, or 'on' position, and sure enough the fan went on. Then a minute later we heard the propane turn on and heard the pilot light go on. Next thing we knew we had heat. After all the reading, worrying, and googling we did, we found the furnace could just be turned on with a simple flip of a switch. Sometimes the easiest things take the longest time to learn.