Well the horn on the Toyota I just got is not working. I did a search on this issue and tested all likely faults, e.g., relay (changed it), fuses (all tested good), horn itself (wired directly to battery and it blared). When I hit the horn button on the center of the steering wheel, which is basically the airbag, I can hear the relay clicking and when I replaced the relay, I still get clicking but no horn sound. Like I said, I proved the horn works as well as the fuses. I'm starting to worry that it might be the clock spring or worn contact in the steering wheel behind the airbag? I was able to successfully change the clock spring to my XL7 before because the horn didn't work and my airbag light was on, but I don't have an airbag light lit on the Toyota. I do hear the relay clicking so isn't the contacts in the steering wheel making some sort of contact if it's closing the relay? I'm a little bit at a loss, does anyone else have a clue?