Quote Originally Posted by VehiGAZ
kpaske - the factory alarm does not recognize or respond to the "option" button, so you can't just wire in the door popper to a second alarm channel. Only the in-your-garage receiver unit Zorak was talking about responds to that button.
Yeah - that's what I suspected but wasn't sure - the factory alarm doesn't have an available channel to program. That's why I was suggesting replacing the alarm system for one with additional channels - you could probably pick up a used system on eBay for next to nothing, and IMO it'd be more worth the effort to replace the entire alarm than to try to rig up a device that wasn't designed to be in the vehicle (assuming it's 110V) in the first place.