Hi Boyd, This is a multi function switch, normally called a turn signal switch that controls the headlight on and off, high and low beam function, wiper switch and windshield wiper spray, cruise control and turn signal switch. On some cars the foglight switch is incorporated on this. But other vehicles had the switch separately. We recommend referring to a trusted vehicle specific repair manual for details about this problem. You can find more information here: https://www.carparts.com/blog/why-you-should-always-consult-a-repair-manual/ Also, it is best to consult with your local automotive shop or dealership for this particular detail.