I'll go ahead and post a couple of pictures for future reference.
Here is what the column looks like without the steering wheel. Put the steering wheel on first and tighten the nut. The white tube is where the spring and nail go, and the tube lines up with a hole in the steering wheel.
Here is the spring and nail. My replacement steering wheel came from a big jeep, and so the spring wasn't the right length, so I stretched it out.
After you put the spring and nail in the white tube, there is a not-quite-flat metal plate that goes on next, with the edges touching and the center out. It acts like a spring.
Then you put on the thing-a-ma-bob that has three screws with an insulating ring so the screws don't touch the metal. The notch goes at the top.
Put the horn button on and you'll have the finished product shown two posts earlier.