Help me diagnose my horn...

[pritch]

When I was changing my cancelling cam for my blinkers, I foolishly did not disconnect my battery, and I shorted something out in my horn circuit. Now, I can't figure it out. Is there a fuse or fusible link anywhere in the circuit? I replaced the relay with a known good one and that didn't help.

I need to get this fixed so I can pass inspection-it's the only thing that don't work.

Thanks.