The lights on my harbor breeze fan stopped working this morning. When I came home from work, I got the ladder and took down the lights. I don't have a multimeter but I saw that there is this Watt Regulator (pic below) in the fan. I traced the wires and it seems that this may have been the culprit. I snipped the wires, got some wire nuts, and wired directly into the 120V circuit. Ta-da! Lights are back and fan is working normal.
Question is : What is the purpose of this watt regulator? Why do some fans include it?