Need help with wiring train horn to alarm

[Knockoutpie]

Well here's what I have so far

You must be registered for see images attach

It works it does works perfectly only one problem, the only way I could think to get my train horn to pulse is to hook it up for when the lights go off.

Now here's my problem, I can set it so that my alarm never goes off just lock/unlocks my car. But when I press the button my lights flash and when they flash my horn goes off, which is mad loud...

How can I get my horn to pulse with using someone other than the light flash h1/2 wire?

You must be registered for see images attach

Here's the install for the alarm

 

[Knockoutpie]

https://www.youtube.com/watch?v=2OQk3XjLPvU

1:00 into the video is what my alarm sounds like which is the brown wire, If I tap into the brown wire would my train horn go off like that?

 

[Knockoutpie]

Ok guys I did it just hooked up a switch so that I can have my horn on or off when I want which is perfectly ok with me. Posting a vid in a sec :3