Jay ~ JAY DAVIDSON has been working on his 1/4 windows after having them refurbished and is having "fun" getting them to fit back in place, but he will get it. He has one already back in. He has also replaced his steering wheel with a new one, but in doing so, it caused the horn to sound constantly. He fixed it by doing this.

I unplugged the horn relay............
Someone glued the center piece about 1/4 too low and it was contacting the horn button. Solution.................file the button...............WORKED