It's behind the the fuse box, three wire connector, black, green and brown wires.

 

Has any one noticed that no one has addressed the original post...

Is it possible to make the security system activate the horn.

I don't think it can... I'm not sure why... but if any one has figured it out I (& the originater of this thread) would sure like to know about it.

 

Is this connector on the Security module or does it originate off the bike's wiring harness? Does the fuse box need to be removed to access the connector? Thanks.

 

Just got back from Radio Shack with the siren, should be a quick hookup.
Thanks everyone.

 

I did this to my Ultra 2 years ago and posted a write up on it. I have the write up on it somewhere on my comp with pictures . If anyone needs it I will look for it. Just let me know.

 

I had to unbolt the fuse box to get enough play to search for it. I'm not sure where it originates from but I found it behind the right side of the fuse panel.

 

Think I might have to try this one.

 

What about...