About a week ago I picked up an air horn off of a semi at a junkyard. Over the past few days I’ve been finding time to install it after work and last night I finished it up. It’s a Hadley 29” horn mounted to a 2 or 3 gallon tank with a 150 psi compressor. I didn’t want to put the horn in the spare tire location because it’s a beautiful horn and I didn’t want it getting covered in salt in the winter, and I wanted the sound to still project forward, or at least from the front of the truck. So I found some space under the hood.