Horn contact for stock wheel question

[Tbruz]

Trying to get a stock wheel back on my 72 Blazer after removing a aftermarket wheel.

How does the horn contact and spring fit into the canceling cam?

I can't find a real assembly photo but the LMC catalog show the contact pin first(wide part down), followed by the spring then the plastic spacer.
No way this can work.

Only way I can figure is spring first, then plastic spacer followed by contact pin(wide side up) but the spring seems really weak.
Any inputs appreciated.
Thanks,
Tony