I just joined the ranks of Wolo Bad Boys today. Thanks for your video. The installation is easy, but it is great to see how someone approached it. I pretty much copied everything you did, except that I used the Wolo Bad Boy instead of the Stebel, which appear to be the exact same product. Mine came with a relay, and I added my own wiring and fuse block and connectors. Took about an easy hour and one Dr Pepper (soft drink) to do the job.
That bad boy is LLOOUUDD!! I am tired of being cut off by careless drivers, and they can't even hear that little beep beep horn that comes on the C50, worst horn ever. This should get their attention. Loud horns save lives?