Door Buzzer

On my 1998 ford step side ranger 3.0L V6 my door ajar buzzer goes on and off while driving. I've located it to a master control box with 3 main wire plug- ins plugging into the the box. The buzzer is contoled by the bottom plug-in but it contains some 10 wires some controling interior lights and such. Which wire do I cut to stop the door ajar alarm without having to unplug the whole plugin controlling tons of other stuff