What if you take the horn off, and hook it to another 12V source -- a car for example ? If it works there, that would demonstrate you understand how the horn is supposed to function and eliminate that as a variable.
- Good Idea....but my horn cable is soldered into main plug...horn is under the tank and wires are difficult to untie and access...I'll find a way to test the circuit..
Are you running a relay -- horns (I don't know about that one specifically, sorry) in general are high-amperage devices, and need heavy duty wiring direct to a big fuse and prime power, where the switch only activates a relay.
- Yes I am running a stock relay that comes with horn, fuse is 20A and is fine
Have you checked the fuse ?