My first Thread Post!
Today I upgraded my crappy horn with a PIAA Dual horn setup from Amazon. I selected this set as the advertised amperage draw was the lowest I could find. After installation, I did find that the horns sound better by using chassis ground, and I am planning to add a fuse block, tapping onto the alternator and providing a 30 amp relay... During the video test I found the tone has some variability which I assume is due to circuit draw. The stock wires are pretty small at best.
Below is a link to a YouTube video that I created: