You're right. I was expecting a noticeable click, but on mine it's more of a slight bump. Had to turn it several times before I felt it. It doesn't seem to have any purpose on my pc unless it turns the running board lights off. As I mentioned before, my dome spot lights have to be turned on/off with the rocker switch on them. They don't have a setting that allows them to be operated with the door or the dimmer knob. Guess I don't really need that,anyway.
Just went outside and when I closed the door the light turned off?