Cut a hole in the floor that will allow the shower pan to be installed below the surface of the floor. A shower pan cover should be placed over the shower pan so that it is flush with the camper floor when the shower is not in use.
Attach the drain from the shower pan to the drain pipes that lead to the gray water drainage tank or the campsite water disposal connection.
Install hot and cold supply lines to the shower faucet by placing T couplings in the existing hot and cold water pipes. The cold water supply line can connect directly to the fresh water tank if accessible. The hot water supply line can connect directly to the hot water tank output if it is accessible.
Mount a collapsible shower ring and shower curtain above the shower pan.