help me fix my horn please!!?

Hey i own a 99 ford explorer xlt, and well my horn just stopped working about a month ago, and i still cant figure out the problem. the fuse checked out fine and so did the relay. i tried to look for the actual horn itself, which alot of people tell me its up front like around the radiator or headlights, but i still havent been able to find it, am i looking in the wrong place? and i was thinking (and dont ask why, beucause i dont even know) that maybe its something in my steering wheel? but i dont want to mess with that and have the airbag go off in my face. so if you can help, please do.. i would really appreciate it!