[dcasalena]

it looks right from there, might need more pics of what the horn set-up is above the cancel cam. If the pin on the cancel cam is hitting metal I think you'll have a problem. The instructions with those things usually tell you to cut some off to shorten it.
If I understand the horn wiring correctly, the horn grounds to the metal in the column, mine grounds to a steering wheel bolt. So if a wire isn't insulated/pinched, or that cancel cam pin hits metal, you'll sound the horn. Might be just a bit too long so it contacts something only when you tighten down the wheel nut.
Just my guess with very little experience.