I have some ideas . . .
I'm about to go out and do this myself. The part you will need is called a clock spring.
First and foremost, disconnect the battery. I've heard it suggested a time of at least 30 minutes. If not, there's a good chance the air bag could go off.
Second, I don't have the actual YouTube links, just the saved videos, but if you do a search out on YouTube you will find them. Also, if you buy a used clock spring, then pay attention to a video on orientating it. From what I'm seeing, the Patriot is fairly compatible with the Compass in may ways (that's how I learned to remove the front bumper/grill).
Now, before you start tearing in to things, have you checked to see if the horn works by using the remote? I can get the horn to honk when I either lock the doors or hit the panic button - thus the reason for me now heading to a clock spring replacement.
Also, there is no horn fuse by itself or with another component, listed in any documentation I've found.
If you don't have a horn using the remote, you might want to check the relay box. You'll want to remove the bumper and grill, again, YouTube is your friend. It's not hard at all, just be aware that the connectors on the back of the bulbs can be difficult to remove and the wiring is short. You'll need to open the red tab on the socket, most likely with a flat blade screwdriver and then get the sockets off.
The relay box is directly behind the horn. There are either four or five relays, no documentation. I took all of mine out and checked with a volt meter and by switching them out. Again, that's if the horn does not work by using the remote. If it does, don't bother with pulling the front plastic - a waste of time unless you just want the experience.
Also, don't forget to check the individual fuses in the fuse box. I simply applied power but didn't start the vehicle and checked each of the mini-blade fuses with a volt meter - all showed alive. The other types of fuses I didn't touch.
Please let me know how it goes. Best of success - Bruce