How to re-hook up Clifford Concept40?

Hi, here's my situation; I hope you guys don't mind helping me out a little.  I bought a used car, and it has a Clifford Concept40 system installed.  However, the previous owner lived in an apartment building where the alarm was getting him in trouble, so he had the installers unhook it. That's all I know. I'd like to figure out how to get it back operational on my own.

The visible switch is still there, and I've seen the alarm horn/speaker thing is still installed.  I've found a little black plastic Clifford case (around 1.5"x2") wired up sitting under my shifter boot, and a large Clifford Concept40 black plastic thing near my fuses. 

The larger module was still plugged into it's multi-wire plug, but also had a white wire running off it, not part of the plug.  The white wire was snipped, and I couldn't find where it should be hooked up to.

Any ideas of where I should look to see how they unhooked the system? I thought maybe they simply pulled a fuse or something, or maybe they snipped that white wire to disable it?

Thanks for any help or ideas!

Here's a photo I took of my Concept 40 thingy with the white wire:

Ok, forgive my ignorance, but why does it have an antenna wire?  Does that hook up to my car antenna?

By the way in case it may matter the car is a '94 VW Corrado.

I'm still hoping for some help or ideas... if you guys had to try to diagnose how it is unhooked, where would you look? Fuses?  Or is that cut white whire a sign that it has been seriously disabled somehow?

Thanks