Fuse / horn question

[1978sierra]

Hello all,

I recently had to replace my ignition lock cylinder, I got everything put back together and functioning properly. The horn blew loud. I then noticed I put my wheel back on a few degrees off so I pulled it off to realign it. While it was off I depressed the horn contact pin by accident with a screwdriver and the horn honked and a spark happened at the contact pin. I then replaced the wheel.

Now my horn won't honk. Figuring I'd blown a fuse I got down to take a look but I'm not sure which fuse to replace / they look ok.

Here's a pic for reference. Any help would be greatly appreciated.

You guys rock