Review on Enhanced SEO: JR Products 12815 Black Mini SPST Mom-On/Off Switch by Kyle Rodman

I use it as a horn button as the steering wheel button doesn't work. I just hooked up the right wire under the dash, routed a ground wire, then used a Dremel tool to cut a hole in my dash for the switch and plugged it right in. The switch is spring loaded so I just press it when I use the horn. and let go. Works perfectly!