Dash panel that houses Lights and Mirror controls question

[Westwildcat]

Ok the plastic dash panel that holds the headlight control and the controller for the mirrors, how does it tighten up to the dash? Mine just hangs there and wobbles as I drive. There isnt any screw spots like there is for the dash piece that holds the stereo, and its wobbling is bugging me so much I am temped to drill a screw hole in it to fasten it up tight. How does this piece properly tighten up the the dash?

Any help appreciated!
Thanks