Horn parts help

View attachment 1715588839 View attachment 1715588840 Hello everyone! Got almost everything ironed out with the lights. Everything works except the cluster turn indicator. Anyway, the new turn signal switch has a horn contact. Horn started blowing when I installed wheel. Looks like I'm missing something? Car is a 74 Duster. I checked in the steering column section of the downloaded manual. Don't show in detail( that area) . Any ideas what I need ? I would hate to unplug it all...... in advance, Thanks!
You should have a wire from the metal ring on the back that goes though the hole right near the loose terminal that's hanging there. The wire may be broke off and crammed down in the hole grounding it out.