Use a bathroom cleaner to clean off the area around the bathroom sink openings. Carefully scrape up any construction residue, if present.
Roll out a bead of plumber's putty approximately 1/4 inch in diameter. Turn the Kingston faucet over. Press the bead into place around the underside of the faucet perimeter.
Turn the faucet right side up. Insert into the holes in the sink countertop.
Thread the retaining nuts onto the underside of the faucet body. Tighten them hand tight. Once the nuts are flush, take a pair of pliers and tighten the nuts further.
Wrap the outlet threads on the water supply valves and the inlet on the underside of the faucet with plumber's tape.
Connect a supply hose from the hot water supply valve to the hot water inlet on the underside of the faucet. The water supply valve should have a temperature indicator on the outside or be identified by color (red for hot and blue for cold). Tighten the couplings at the end with pliers. Repeat this process for the cold water supply valve and the cold water inlet underneath the faucet.
Turn on the water supply for the faucet by rotating the water supply knobs counterclockwise.