Dome Light Wire

I installed an aftermarket keyless entry system. I was unable to locate the domelight wire based on the vague description most alarm websites give. "Top Rear Fuse Box Twin Wire Pin" or something.

I hooked it up to the wire that triggers when the door opens. The dome light comes on when the system unlocks but the interior buzzer goes on each flash of the parking lights during unlock. This is because the factory computer thinks the door is open with the parking lights flash.

So does anyone know where this wire is, short from me pulling all the interior out and tracing it?