Turn off the hot and cold water supply valves. This is usually located in an adjacent room or near the water heater.
Insert the new faucet assembly into the opening on the faucet valve where the old one was.
Push the U-shaped clip onto the faucet assembly. Set the stainless steel sleeve over the faucet.
Hold the faucet handle against the grooves on the faucet and tighten the single screw with a hex wrench or Phillips screwdriver. Push the plastic cap into place over the screw.
Restore the water supply to the shower by turning on the hot and cold water valves. Test the shower and make sure it works properly.