Below you will find installation diagram that is applicable to most 12V setups and a basic installation procedure if you wish to install the kit yourself. Check air tank is pressurized, make sure switches are on, replace fuses, check all electrical circuits are secure. Why does the sound of my horn change? Ensure the air source from valve is entering the proper manifold, check each air line is equal length.
Horn Amperage List
Automotive Horns | GTSparkplugs
From looking at that, how do i put it on its own switch? You would need to bypass the existing horn and have another live from going to the switch you want to use and put that in place of the live coming from the existing horn. Get a live from fuse box or battery into relay, relay to air horn, then earth to air horn, then live to new switch, earth to new switch, and then live from new switch to input of relay. Or, you could even borrow the live feed to your existing horn to act as the switch for your new relay. Hope you used the correct grade of cable for 87 and 30 of the relay. My thoughts too, must be one hell of a compressor.
Train Horn Installation Guide
Car and Motorcycle Horns Horns are used on all sorts of vehicles from motorcycles, cars, trucks, utility vehicles and so on. They are a very simple device and come in couple of styles. Wiring up an existing horn is pretty simple, and depending on your application you may want to use a relay to hook it all up. More on the shortly.
For cars, trucks, boats, motorcycles and other vehicles with 12V power supply Package Includes: Single trumpet Train Horn, 12V air compressor, air hose, bag of fixings Working voltage: Shopping list: We suggest using 12 gauge wiring.