Ok guys here's a little ditty. I bought a different horn for my FLHTCU and while replacing it I broke the insulator rubber for the horn as it was all seized on......no big deal so I thought but when I went to Harley you have to buy 3 of them as they come in packs of 3 for $50.00 CDN incl tax....WHAT???? So being an old backyard auto mechanic I simply bought a 1 3/8 expansion plug used in the automotive industry to repair a rusted out frost plug on engine blocks made by Papco ($6.95) from your local automotive store. I also bought a piece of 5/16 ready rod NC $3.00 Home Depot cut it to size and put an extra lock nut on the back! So easy to do and so much cheaper!!