I can only assume that because there are no comments that everyone is satisfied with the oem squeaker that came on the bike?
oh no, on the contrary every one hates the OEM's, and thank you for posting your find and install..
Seems like there has been a sharp decline in the normal traffic here lately, so don't take that as a barometer...
I really like what you did, and you can't go wrong for $10, even if they don't last, which I can't see any reason they wouldn't, mounted inside.
I actually bought a Wolo Bad Boy clone from H/F, for 3 x what you spent (still it was cheaper by far than anyplace else), and have it sitting on my bench to install.
good job, thank you.. I may even copy your setup, just for the economy and ease, along with the mounting space. And I'd probably use the relay it came with, just because.. well, it came with it... I might waterproof it a bit tho. (the air horn takes a bit more thought on location)