I could wiggle the switch actuator and the light would flash off and on intermittently so I knew it was the switch. Found Appliance Pros online and used their cross reference guide to get the correct part # that was compatible with my 20+ year old refrigerator. The part shipped that day and arrived 2 days later and there were no shipping charge. I watched the video online regarding the replacement and it was pretty much dead on except my wires and plug remained up inside the mounting hole and needed to be fished out with the help of a pair of needle nosed pliers. The new part plugged right in, mounted in the existing hole and worked like a champ. Total time was about 15 minutes due to minor problems getting access to the plug. Overall it went very well.