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My friend wants me to help install a booty call in her ride but she has an alarm hooked up already. The thread originally posted by "ak" mentions it but all the diagrams are deleted. From what I can see, her siren (both + and -) is hooked up to her alarm box and the alarm box has all these wires hooked up to it...

Thanks

 
Rep Power: 812

Get a separate siren maybe? Or do you need the alarm box to make it work.

 
Rep Power: 393

Let me answer my own question for those of you that might search for this in the future.

Tap into the positive from cigarette lighter and run that to the button.
Then from the button tap into the positive to the siren, leaving the negative all alone.