Step 1
Determine the type of shower you will install. Standard RV showers are mounted flush with the exterior of the RV and have a hose with a handheld sprayer attached. Look behind the wall where you plan to mount the shower and measure to assure there is enough room to install the unit.
Step 2
Drain the water out of the plumbing system in the RV. Locate the hot and cold water pipes. Find a place in the line that allows enough space to cut the pipe and insert a T coupling. Analyze the route you will take from that location to the shower location.
Step 3
Cut the pipe and insert the T couplings. Attach PEX pipe to the T coupling and route it to the shower location. Place clamps along the way to hold the pipe securely in place.
Step 4
Mount the shower at the desired location according to the manufacturer’s instructions. Flush mounted showers require a large hole to be cut into the RV but other types can be installed by drilling holes for the pipes only.