Just picked this up this week, and today I discovered that the horn doesn't work. I checked the fuse, which was good. There's 12v on one of the fuse terminals, so I assume it's something downstream from there. I also tried switching the relay with the one beside it (which I think was the AC compressor) but that didn't help. I tried looking around for the horn, but couldn't find it. Any idea where to look? And what would be the next step to try to figure out what's wrong?

 

The horn is under the right headlight.

Turns out the horn was in fact bad. The new one was a bit tricky to get in - I had to loosen the actual horns, then tighten them back up when the bracket was in place.