If / when you replace the horn, here is a little tip.
When I replaced my lights, I had to pull the horn. The horn is mounted with a small nut (10mm if I recall) on the inside of the mounting bracket with virtually no clearance. Trying to remove it with a wrench without dropping it was a pain. Finding it in a gravel driveway afterwards was tedious. When reinstalling, I realized that the bracket is sufficiently flimsy so as to allow it to be bent inwards towards the engine compartment. I was able to get my fat fingers in there with no problem once it was bent. Seems disgustingly obvious in hindsight but live and learn.
Black Forest Green 2012 JKU Sahara, Tinted Windows, Chromed Door Handles, Star Fab Door Stops, Brake controller, Poly Filled Speakers, Black Hole Mod, DIY Grill Inserts, Blinker Mod, Aries Front Bumper, Spyder Rear Bumper, 2" Rancho Lift, Quick Disconnects, 9K winch, 315/70/17 Duratracs on 17x8.5 Warlords, IL-PU36, X-treme 9008 bulbs & PIAA's