They are switches... I bought them from home depot and they control the subwoofers, fog lights, and the floor lamps... really easy to do.. i dont even use a drill... I jus hammer a hole into the plasti pieces, then widen it with a razor, then thread the switch trough it and voila ur done... hardest part is not breaking the plastic tabs off because then you hafta resort to twist ties (you would not believe how much of my car is held up by thhose things) and other objects... if you have n e questions PM me... i think i figured it out