How do you release an ignition cylinder

67Dart273: Yes mine is quite different (see attachment). By studying the replacement, I believe I've found the access hole. But it's not cooperating with me. I don't know how much force is required to free the cylinder. I wonder if I have a mechanical problem. I did detach and lower the steering column. Thank you for the fast response!

Your picture looks like you haven't pulled the column apart far enough yet to gain access to the ignition. The part the shift lever is on has to come off also.