adding the horn to an alarm

lol. Yes they would. Thanks alot, that is the exact answer I was looking for.  Appretiate the help.

Whoa Whoa Whoa......there is a small pin on top of the alarm....you need to use THE BROWN wire...it is a negative trigger.  If you use the ORANGE / black it will do nothing...that wire is a channel.  The brown wire will pulse only when the alarm goes off.  I have gotten away just tapping into the negative horn relay wire without the use of a relay. 

If you hook up your air horns and use the factory horn to trigger them...ie. when you press the horn the air hors also go off then all you need to do is just tap into your factory horn which will trigger the air horn anyway.....the ORANGE / black wire will NOT DO NOTHING if you connect it .  That wire is an extra channel output not an output when the alarm goes off.

O.k I see. I dont have my Air horns connected to my factory horn. But I got it now....Just use the Brown wire w/ relay to my Air horn push button. Thank you.

Does anyone know the color of the horn wire in the steering column or under the dash. Also is it a positive or negative trigger wire? I want to avoid running the wire from the dash to the horns under the hood, 05 Impala.