[TKCR]

I have the Forever Sharp wheel and horn button, all that stuff. Mine works. But that’s beside the point.
If it were me and I had this issue, I know it sounds like a lot of work, but I would take all that off and put the original parts back on and see if the horn starts working again. That’s just how I work out electrical issues, lol. I’m not the best electrical trouble shooter but it makes since to me, that if you put the old parts back on and the horn still doesn’t work, then it’s not the FS causing the issue. Something got knocked loose or cut. I know that’s not the best analogy of trouble shooting, but it’s what I would do. At least I would feel I would know what direction to go at this point.
There are also videos on changing the wheel out and it covers the horn. I watch them when I swapped mine out, because I had no clue what I was doing. So I rely on the videos to help me along on my truck.