The horn on the Suzuki V-Strom, as on most motorcycles, is a joke.  It is an anemic excuse for a noise-maker that isn't worth the metal its made from.  I replaced it with a REAL horn, Stebel Nautilus Compact air horn.  THAT, my friend, is a horn.  Anyone who doesn't hear that one when it sounds is dead or comatose.  It commands attention, and when I blow my horn at someone I WANT their attention.  Since installing it I have never been ignored! There are numerous methods for mounting it but I decided from the beginning that I wanted it mounted behind the fairing.  It took some doing, and some advice from other riders, but that is where mine is mounted.  Here are a couple of photos: (Click the images above for a larger view) It is mounted to one of the tubes that supports the fairing on the right side.  Rather than use the clamp that came with it I used a large hose clamp (thanks, Robret!).  It has been in that position for 9 months now and has not slipped in the slightest.  I check it from time to time to make sure it is still tight but it has not moved. Wiring is pretty straightforward using the relay provided with the horn and the factory horn leads to trip the relay.  A schematic diagram is included below: (Click the image above for a larger view) The horn costs around $35 and is available from many online distributors.  I got mine from California Sport Touring.  These guys are an absolutely first-rate place to order from and I highly recommend them.