SoundAlert Electric Air Horn Kit

My Mazdaspeed3 stock horn is extremely wimpy and doesn't get noticed, which is a safety issue in itself. I wanted a louder solution but didn't want to just replace it with Hella horns like everyone else. I did some research and Online-LED-store was the only place carrying this kind of setup with just the bullhorn (all the other options have multiple sirens and other functions, which I don't need).

At first my setup didn't work even though I followed the instructions exactly, and realized my car has a negative-triggered system. This bullhorn only works with the steering wheel button if you have a positive triggered system. So all I did was install an additional relay ($7) under the hood wired to the switch, which converts polarity from - to + and makes the system work. Now my car actually commands attention and gets noticed when people cut me off or text while driving. Best thing is, the switch allows me to toggle between the bullhorn and my stock horn if I ever need it.

Lamphus has a very high build quality; both the speaker and module are solid metal units that are waterproofed correctly and have high grade wiring. The switch and connectors they provide are also quality pieces. I will definitely recommend this setup, and this site in general!