My horn stopped working. I have an aftermarket steering wheel, and I'm pretty sure I got the wiring connected right, and I have a good contact on the gold rotating disk behind the steering wheel hub. The horn fuse is good. I replaced the horn relay, and the relay clicks when I depressed the horn button. I pull the horn and wired directly to the battery, and the horn works fine. What else could be failing? Thank you.

 

You should test your relay again just because it clicks does not mean the relay is actually working properly. Test the relay at the pins. If the relay is still good check your horn button.