RS3: alarm install guide

Hey all...another n00b here. :)

I have a 1999 Mustang with a Matrix RS3.  I'm looking at adding a few things, like underbody neons.  I'd like to be able to turn on/off the neons with the remote, so my question is can the alarm support this as an addition?  I've done some electrical work before, but nothing as big as an alarm.  Given the right direction for info, I'm willing to learn.  Is there a guide somewhere on the net that'll outline how to add something like this?  Or at least where to start?

Thankyas!