OT - 92 Buick - Alarm Problems-how do u remove

i need to disarm (remove the circuit) the factory alarm system on our 92 Park Ave. the problem is this. in the past the security system would turn the interior lights on once in a great while even though we weren't touching the car or arming the system. now its gotten to the point that even if a loud car/truck drives by or whenever it JUST decides to do it the inside lights on for about a minute. well it doing so much now that if the car sits for a few days w/o driving it the battery goes low.
we have the coded key system bypassed already & i need to do this also since we are wanting to sell the car & the last time someone showed up to look at it the car wouldn't start & i know this has to be the problem, because the battery is new the alt is good. so could someone tell me where the fuse is or how to remove the alarm system ...TIA....joe

thanks denny, but i know longer have to worry about it, some guy showed up w/a hand full of $$$$$$$$$$$$ said dont worry about it & drove away w/it....joe