Alarm system add-on?

[ryeguy]

Hi guys,

I don't think I need a full-fledged alarm system. I'm happy with the anti-theft set-up that is factory, but am wondering if any company makes an add-on motion and glass shattering sensor for what's already there?

--Rob

[carnutsx2]

If its like any other factory alarm you can tie into the door input at the alarm brian and use a diode.