Ok Shelly; think about this, you have a
propane line that originates outside the trailer, then goes inside and is disconnected, and you want to run it back outside. Why not just tap into the line outside in the first place? You would need some knowledge of the correct fittings to use but it can be done easily. I did this on my daughters' popup with a "T" fitting right on the tank, a short piece of copper, and a gas valve. Her trailer also had the stove top that could be used inside and moved outside by quick couplers and valves, but we have since eliminated the stove completely and she uses a Coleman Road Trip grill supplied by a 10 pound tank. Note that if you look online for one of those the correct name is "cylinder", but everyone refers to them as "propane tanks". I formerly worked as a service tech for a fuel oil/propane supplier so I was familiar with all the fittings. And another question, do you use the
furnace, because if not then you don't need propane into the trailer at all. If you still want to hook into that old stove line, maybe you could run it out where the power cord and water fill are, that's where I put the cable for our TV antenna. Bob