My horn stopped working, fuse is fine, and replaced the relay, still doesn't work. The horn itself is fine, we hooked it up to a battery and it beeped, it just wont beep with the steering wheel. What else can go wrong?
My rear defroster also stopped working, no visible breaks in the lines, just doesn't work. The light on the console lights up orange and clicks fine too. Any ideas?

Horn could be the clock spring, when you depress the horn button does one of the terminals at the horn relay turn into ground with the relay out of the socket?

I have no idea how to test that...

Then you'll need to pay to have someone test it for you or just start swapping parts and get lucky.

well it's been 7 months. nothing has changed. The guy who changes my oil said that the thing in the steering wheen is making contact. He asked if I had installed a sub wire (yes) in through the firewall on the far left along with the other wires. He suggested that I may have snagged a wre or two, causing the defroster and horn to go after a bit of time / bad luck. What do?