What color is the horn wire coming from the steering column?

[Hazieview]

I'm trying to hook up my steering wheel horn button to my air horns. However, the air horns need a direct ground to make the relay work which activates the air horns. I need the horn button on the steering wheel to go directly to ground instead of giving a 12v output supply.

Does anyone know what color the horn wire is?

Thanks!
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[frog210]

mine is green

[foamypirate]

You could also use a relay to do something like this. The horn 12V wire would be your trigger. This would provide a ground when the relay gets 12V+ from the horn.

http://www.the12volt.com/relays/page1.asp#p2n