The word horn can be a generic term for a noise maker such as the paper and plastic toys for children's parties, a trumpet in a band, the standard car horn, air horns played at sporting events, and many, many more. Perhaps the granddaddy of them all is the device atop locomotive engines that blasts the super loud and long warning signal to alert passersby that a train is en-route and the tracks must be cleared.

This is a very recognizable sound that has endeared itself to many enthusiasts, especially for the sheer volume of it. So much so in fact that train horn kits were developed as a way to easily add the sound of a locomotive to a vehicle. They have become very popular among automobile enthusiasts who are always looking for a new way to jazz up their ride.

There are many variables impacting the sound and volume produced by train horn kits. The size and shape of the trumpets, for example, influences the tone or pitch. The number of trumpets included is directly related to how realistic it sounds-in fact, it is widely accepted that at least three are needed to produce the most authentic sound. And, the diameter of the air inlet and the amount of pressurized air the tank can hold both impact the volume that can be achieved.

The most advanced models of train horn have at least three trumpets and equipment that have the ability to produce up to 150 decibels. Purchasing the components as a package makes it just about as easy as can be to put together a great system. Everything is included from the basic components, to the wiring, to all hardware needed to install and use the system. And, when purchasing the device all together like this, the component will automatically be sized and powered to work well together, which eliminates a lot of research and shopping around.