1996 Buick Roadmaster

1996 Buick Roadmaster

where is the lock relay located on my 1996 buick roadmaster wagon? Only the drivers side door will remote unlock. None will lock remotely though I hear the clicking as though it is attempting to unlock/lock. The lock/unlock button on the door does not work to lock or unlock when physically pushed. I bought a lock relay figuring that was the problem. Now I can't find it under the dash to replace! My husband is NOT gonna be happy that I ripped the dash apart! I can't find a schematic online or in a Chilton manual from the library. Help me! Thanks