I found the gas line and a T connecter near the end of the pipe. It was getting dark and I was under there with a flashlight so i couldn't get a picture. I'll try to describe it the best I can from memory.
Before the end of the pipe, there is a T with the "bottom leg of the T" heading up to what I believe is the cooktop.
A few inches down the line, towards the rear, there is another T with a line heading to the rear which I believe goes to the water heater or the furnace. On the other end of the T, I call it the bottom part of a letter T, there's a line coming out of the side of the adapter which heads to the furnace or water heater. At the end of this screw in adapter, I believe there is a screw on cap. I'm guessing this is where the hose would connect for the grill fuel source.
Is there by chance a kit to get the gas connected to the source and run under the trailer to a quick connect?
I hope that makes sense and I'll get a couple pictures tomorrow.
These T connectors are in between the tires so hopefully not much is needed in making the connection I'll be doing the work while crawled under there.
Thanks for the help!
You don't say, but it sounds as if you are plumbed with "black pipe". If so, the cap on the "Tee" can be removed, and you can use a hose to route the propane to a suitable location and add a quick connect to the end of the hose. Hopefully the Tee stub points "into" the center of the trailer, not out between the tires.
This is an illustration of what MIGHT work. The "female" threaded fitting on one end could connect to the uncapped black pipe Tee, and the male end of the hose is where you attach the (included) quick connect.
https://www.amazon.com/GasSaf-Natur...ch+npt+to+quick+connect&qid=1578090364&sr=8-2
You speak of clearance issues (near the wheels) and so on, so a major consideration will be routing the gas hose in a way that it can't make contact with a tire, and shielding the hose to protect it from road debris. This does not seem like the ideal location for a new gas fitting if the Tee points out between the tires.
My rig was plumbed with soft copper and flare fittings, and that style of plumbing is easier to adapt and move about.
You might consider "breaking into the gas line" at another location...say near the hot water heater. It's very likely that the black pipe will terminate short of the hot water heater, and then the heater will be fed by either hose or soft copper line. The same would be true of the kitchen range and the fridge. You might insert a "Tee" at the end of the black pipe and then connect the hot water heater to one leg of the Tee and route a gas hose to a convenient location near the edge of the RV's body. Your biggest challenge may be fabricating a secure mount for the quick-release end of the hose (where you connect your grill) and securing the "loose" hose to the underside of the rig with U-clamps that won't chafe the hose. Something like this might do the trick:
https://www.amazon.com/Plastic-2-Hole-Pipe-Clamp/dp/B072JX2596
Seek the advice of a knowledgeable person about making these connections. You may need special pipe "dope" or gas-rated teflon tape for the threaded joints, and any connector that threads onto the black pipe should either be female pipe thread or have an appropriate gasket to prevent leaks. A female Tee connection is easier, because it's easy to find pipe-threaded male brass fittings.
All connections should be CAREFULLY tested with the system pressurized using a pump sprayer with soapy water solution to check for leaks (bubbles). If you are not reasonably comfortable and confident doing this work, you may want to seek professional help. A gas leak and explosion could ruin your day.

