Bruce, if you have a single OEM type horn, the horn button should handle that 60 watt load. That is 5 amps. Some ahhooga horns pull 120 watts which is 10 amps and would be a little more than most OEM steering buttons could handle, that is why the relay handles the amps and your horn switch only sees the load of the relay's electro-magnet, typically less than 1/4 amp. Oino, hope I was of some help. Just checking, but 3 terminal relays are generally used in vehicles designed for the horn to work without the ignition being on. So if I were using this type of relay I would supply the 12 VDC + from the fuse block on a suitable 20 to 30 amp leg. If you use the 12 VDC + from your ignition switch, then it will have to carry the full load which will cause it to crap out sooner than normal lifespan.