Try a Haynes CJ manual for a good picture.

BTW, the "fan" looking plate is called a lockplate.

The white thing with the spring loaded button for the horn is called a cancellation ring. That white thing also operates against the turn signal detents to cancel the turn signal after the steering wheel has been turned a certain amount.

When you install the cancellation ring, it must be installed such that it can turn. If you look at the lockplate, it will be obvious where the horn button must stick up through.

BTW, you can get new cancellation rings from OMIX-Ada, but they will be empty. That is, they will have the copper ring on the bottom, but the metal button, the button keeper, and the button spring will not be included. I haven't been able to locate a seller of those small parts, and I have had to fabricate my own. The spring and button are easy to make -- it's the button keeper that is a PITA.