Both freezer and refrigerator stopped cooling

Compressor Start Divice kit, I took off back lower panel with the 1/4 inch nut driver, on the compressor their was a wire hook that held the starter in place used my plyers to unhook, pulled the unit off plug the new unit in reappled the clip it was so easy I had to exame it severl to time to make sure that was all their was to it. put the cover back on and turn the refrigerator on and it has work great, I did not install the Bi-Metal Defrost Thermostat it was not needed.