key switch removal

how do I remove the ignition switch from the steering column on a 1978 Lemans, I have the directional signal switch out and the key buzzer out but can't get the key switch out, where is the screw located to remove it?

I'm not 100% sure, as it's been a logn time since I've done this, but I think it's actually more of a button that you're looking for, not a screw. It needs to be pushed in and then the switch will slide out. I know it's not the most helpful info, but hope it is somewhwat useful to you. Good luck