Connecting the water supply lines.
Photo: Kolin Smith

Step 5: Connect the water supply lines

If your faucet has rigid tubing, connect braided lines to its hot-and cold-water supply lines (the cold-water line will usually be marked with blue and the hot with red). Then attach the supply lines to their respective valves. If you can't tell which supply line or which valve is hot or cold, you may have some trial and error.

Loop the loose end of the spray hose up and connect it to the third line coming from the faucet. Then, use an adjustable wrench—or any smooth-jawed wrench—to tighten the compression nuts connecting the supply line to the shut-off valve.
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    Tools List

    • bucket
    • basin wrench
      Basin wrench
    • adjustable wrench
      2 adjustable wrenches
    • flathead screwdriver
      Flat-head screwdriver

    Shopping List

    1. FAUCET

    Usually comes with everything necessary for installation, except braided supply lines.


    Needed to connect faucets that have rigid tubing.


    if necessary, to cover holes in the sink rim or the countertop when replacing a three-hole faucet.