Remove the seat from the existing toilet body. Release the nuts, and then remove the seat and cover from it. Store the seat in a proper place for future use. Remove the existing water hose and then install T-valve to the bottom of the toilet tank. Ensure the rubber washer is properly seated and attach the original water hose to the T-valve. After installing the T-valve, connect the supplied bidet hose from the center of the T-valve to the bidet. Turn off the water.