Photos of Seca air horn install.

I finally put a set of air horns on my Seca. I bought a basically brand new pair of Wolo Airsplitters off E-Bay for less than $20, bought an inline fuse holder and a 4-prong 12v 30A relay at Pep Boys for $8, and had the connectors and wire sitting around. The project took one evening.

I took photos when it was 'done,' though it's not REALLY done. They're in this set on flickr: http://www.flickr.com/photos/oblivion/s ... 257225506/ If you select individual pictures, there are some detail notes in the descriptions.


(Yes, the bike is filthy - didn't get to wash it after the rain last week).


I'm not sure if I like where the horns themselves are mounted, but space was limited. I was able to use the holes the factory horns were mounted on, but that poses some problems. Right now, the longer trumpet is nearly touching the exhaust headers and it got pretty warm just on a short trip. The shorter trumpet ends right at the the fairing mount, so it's kind of pressing against that. I don't know if that's dampening the sound at all - they're pretty darn loud! Also, where they are now takes a teeny-tiny little bit of steering range out (I'll only miss is trying to jockey the bike in the garage). I'm open to suggestions here.

The compressor itself is resting on a little ledge on the inside face of my fairing and is zip-tied to the wiring harness going into the fairing for the lights. I may end up drilling though the side wall of the fairing and mounting to that - I'll probably beef it up with some big washers. I originally had the compressor mounted to the old headlight mount, but I didn't like all of the wire and air hose movement and flex that came with steering inputs. That and the included air hoses wouldn't even reach from up there.

The relay nicely mounted along side one of the other components (the turn signal relay or something). I just slid the mounting tab into the rubber holder and cinched it down with a zip-tie. I connected one set of the old horn leads to coil side of the relay. I connected the power side to the battery through an inline fuse (if/when I replace the fuse block I'll wire right to that, but I'm not fixing what isn't broken). The power lead then goes from the relay to the compressor and the compressor is grounded to the frame at the post that the ignition coils are mounted on.

So I now have a loud F-U at the ready to help part traffic. And all for around $25. The nice thing is that there is no delay, which is a complaint I've heard about some air horns. I wonder if those folks were powering the compressor through the factory horn switch, not via a relay, and the compressor took a while to juice up.

I almost can't wait to get cut off again