control the water flow and water pressure to the refrigerator. be sure to put a gasket seal between the valve and the t-fitting. attach the free end of the copper tubing to the valve. now the refrigerator is connected.
clamp any tubing inside the cabinets along the back of the cabinets, to keep it in place.
turn on the water supply. you should have cold water very shortly. you will have to wait 1-2 hours before you have ice. 