nice, though I am not a huge fan of chrome, I would much rather see another color as was shown with the orange or how a decent amount of the originals that I have seen in pictures were green cars with red rims or something to that extent.

This 3W looks even better now since the exhaust pipes has been shortened and bent. Wonderful sound - sorry but I had no camera.
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Stig

Got one of these on A11OGE. Did certainly does the job.

If that really works it has to be an excellent solution for those of us without spare tyres.

Steve, is the horn a straight swap for the factory fitted unit?

Yes - straight swap. It is wired with a relay (as advised).

I have also received another Stebel horn of a slightly smaller size as we were unsure the location and size of the space allotted on the three wheeler. The horn pictured above is the Nautilus model. They offer that horn in black also, and the components come apart rather easily, so you could send that bit off to be painted any color. The one below is the Magnum model (also available in black) which is about 1/3 smaller and draws less power as it is not a dual-tone horn.

Pairs of horns usually come in two tones: low, as the one on the left above, and high.

http://www.stebel.it/stebel2009/products.asp?IDserie=3&uso=&tipologia=ELECTROMAGNETICS

Click on HQ audio to hear a sound clip.

Click ROUGH AND THOUGH SOUND HI-RES for a sound clip of the NAUTILUS COMPACT TUNING air horn.

I had to put a nautilus in my car as my stock miata horn was extremely quiet.