Wow. Way to work through it.

I was at an out-of -town, multi day, show last fall. I came downstairs form the condo to find the horn button(after market steering wheel) on the drivers seat. If you have an aftermarket steering wheel and horn button, you know how screwy the button installation is. Anyway, the horns were not blowing, and I couldn' get them to work. I initially thought that someone heard the horns blowing and pulled the wires at the horns. That was not the case.

I finally got around to trouble shooting. ...had power all the way to the relay (modern relay)...jumped the relay, but no luck. Jumper the horns to battery...both horns were bad. I guess they both "burned out" when the button flew off...? Weird...

Now, to find the correct flasher relay/ buzzer...maybe that's why my emergency flashers don't work...