Turn off all gas operated appliances in the RV. Clear away dirt or debris from the tank area.
Look at the propane connection. Teardrop RVs and small pop-up campers may only have room for one tank. If this is the case, connect the pigtail hose to the tank and tighten with a wrench. For most other travel trailers, two tanks are connected to the system. If both tanks are removed, look at the regulator and attach the tank to the side marked "reserve." Attach the pigtail to the tank and move the black lever on the regulator to the newly installed tank.
Attach the second tank to the system. Tighten the connection with an adjustable wrench. This tank becomes the reserve tank.
Turn on the tanks by turning the valve to the open position. Spray all connections with soapy water and look for any signs of bubbles. Bubbles indicate leaks. Tighten the connections and repeat the soap spray until no bubbles appear.
Enter the RV and turn on the appliances.
Turn off all gas appliances in the RV motorhome. Turn off all electric power to the RV. Turn off the generator.
Open the LP systems panel. Make sure the gas valve on the tank is closed or in the off position. Look for where the gas line exits the motorhome. The gas line connects to the right hand side of the DOT tank. DOT tanks are installed at the factory and they are not easily removed.
Attach the gas line to the tank and hand-tighten. Use an adjustable wrench to finish tightening the connection.
Turn the gas valve to the open or on position. Spray soapy water on the connection to check for leaks. If bubbles appear, tighten the connections. Repeat until no bubbles appear.
Enter the RV and turn on the gas systems.
