[mike657894]

I have a non original horn with that shape but short. It was broken but very close to fit the harbor freight ahooga horn to it. Just had to drill the holes with a 1/4in bit and that moved the holes enough. I have set up a relay and a ballast resistor to alter the sound to 6v. As my car is a 12v. That means to me at least that the habour freight will do 6v. It did need some adjustment to its tone adjuster to get a good sound out of it though. cheap at about 12$