how to replace headlight switch (dash mounted pull switch)

no lighting / dimming to anything when turning the switch. Really need help to remove it. Attempted removal yesterday, looks like the panel (?) which includes the vent & vent control dial should pull out, Got it wedged out about 3/4 of an inch after unscrewing light switch knob, but couldn't see what what was still holding it in & didn't want to force & break something else.underneath switch dial didn't see any screw, just the (post ?) sticking out that the switch knob was threaded onto. Definitely something else in that spot that's holding the whole panel to the dash. Two small slots around circular area may be snapped in/out? Will photo so I can see it more clearly. Thanks for your help.

ok, took a pic w/ipad, and can clearly see that there's a small phillips screw on the top edge, at an angle that i couldn't see looking straight at it. Removing that and the plastic putty knife should pry that *&^%$! out of there.