55.2-59 What’s missing with my truck horn?

[ApacheProject]

Ok, I’m confused here. I attempted to install my stock 58 steering wheel today and can’t seem to figure out the horn. It seems that I’m missing something. It has the turn signal cup, canceling ring installed correctly, contact button installed from the top of the steering wheel, and inner contact plate inside of steering wheel. How does the horn button press down on the plate and raise back up? The plate doesn’t seem to move either, it’s under the steering wheel nut. I searched the forum and many had the same questions but nobody ever posted the solution. Pics would be nice too. Thanks