Installation For Models: 673-2522 ?! ! L PLUMB WORKS e Mobile Home Two-Handle Tub/Shower Faucet INSTALLATION: 1. Tum off water supply to existing faucet. Disconnect the water supply lines, remove the nuts from the hot and cold nipples and remove the faucet. 2. Apply a bead of plumbers putty around the edge of the faucets underside and set the faucet into the wall. Thread the nuts onto the hot and cold nipples and tighten. Remove excess putty. 3. Connect the middle nipple to the shower line. 4.