The lighter has a threaded ring on the inside of the dash that retains it. You'll have to pull the cluster, which I'll assume you're doing anyway to get at it.

You need to pull the lock cylinder out first before you can get the switch/bezel off. Use a paper clip in the small hole in the face of the cylinder, put the key in and turn(can't remember if it's left or right)and the cylinder should come free.