I have a random bulb floating around behind the ashtray. I think it's the backlight for the ac/heat/def switch. Anyone have any ideas on how to get it back to where it belongs? How do you access that backlight? It's an '03 f150. Thanks.

 

Remove the piece of the dash that surrounds the radio/heater control. (it just pops off) Be careful!
There is one or two bolts that hold the heater controls in. Remove the and it will come out.
The first thing to remove is the radio surround. It's the hole red part around the radio/heater in this pic.