Turn off the water supply valve behind your existing toilet. Flush the toilet to release any remaining water.

Disconnect the existing water supply line from the toilet tank fill valve. Keep the supply line — it will reconnect to the T-valve.

Screw the T-valve (with rubber gasket inside) onto the toilet tank fill valve inlet. Hand-tighten, then 1/4 turn with wrench. Do not overtighten.

Connect your water supply line to the bottom of the T-valve. Connect the bidet hose to the side outlet. Hand-tighten, then secure with a gentle wrench turn.

Turn on the water supply valve slowly. Check all connections for drips. Wait 2 minutes and recheck.

Unscrew and remove the existing toilet seat. Clean the mounting area thoroughly.

Insert the rubber anchors into the mounting holes on the toilet bowl. Press firmly until fully seated.

Press and hold the catch plate button on the bottom of the bidet seat to release the plate. Place it over the mounting holes with guides. Insert screws through the plate into the anchors. Tighten until secure.

Slide the bidet seat all the way onto the catch plate. You will hear a click when securely mounted.

Connect the bidet hose to the water inlet on the bidet seat. Hand-tighten, then 1/4 turn with wrench. Turn on water supply and check for leaks.