Quote Originally Posted by kpaske
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.
No, it's NOT 110v (that's why it comes with a voltage converter). Don't really want to replace my factory system that works fine (with exception of LED on dash never lighting) with an aftermarket system just to get this function.

Was hoping that someone had already done this, or at least attempted it, but seems that the only ones who ever bought this accessory never come around here anymore, and they only used it for it's intended purpose (garage door) anyway.

I would think that they did not just one frequency for this option but I guess that, like the operating voltage, is something I will have to find out if/when I buy it.

Thanks for all the input; I am going to contact Merlin to see if this part is even still available