I replaced my knackered horn with one of these http://www.justkampers.com/shop/typ...mpact-twin-tone-air-horns-12-volt-j13321.html Super easy to install, I put it in the engine so as to remove the risk of water damage to the horn. The price seems to have gone up as I only remember paying about eight quid at the time, as said, easy to install nice & loud & I'm even thinking another would be good so I can be even noisier!
most auto places do the ring two tone air horn kit, comes with a little compressor and a pair of horns, you'll need a relay but it'll produce a loud enough sound to scare most people! about £15!T:
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