I might be stupid, which generally is true 99.99% of the time, but for you to pass NYS Inspection CAR or MOTORCYCLE, you MUST have a horn. And for you to be able to RIDE your bike away from the dealer, it has to have a NYS inspection sticker, which would REQUIRE you to have a HORN(ey). Also holds true from there forth about must have a horn to pass NYS inspection.
So, how you finger dat Harvey Donaldson’s don’t come with a horn? It would be Illegal for any dealer to sell you a motorvehicle/motorcycle without a horn.