Step 5 · Reconnect the Water Supply Lines

This is the step people usually slow down on. Go finger-tight first, then a quarter turn. No rush — replay the clip whenever it helps.

If the supply lines are in good condition, clean the threads on the faucet tailpieces and supply lines using a wire brush. Apply plumber's Teflon tape to the threads of the faucet tailpieces. Reconnect the supply lines, tightening them securely with the adjustable wrench. Slowly turn the water supply back on and carefully check for any leaks.