if you unplug that, it might trigger a kill switch or something. just trace the wires. if its an upper quality alarm with window switch and door lock abilities, the wires will tie in to those inside the kick panels probably, and if it has an ignition kill, that will be on the purple wire on the steering column I believe. It will probably also splice into the door light actuators which are behind the kick panels also, so when the door is open, it triggers the alarm. Good luck...sometimes those are really put in with the intention of not being able to take them out easily, but sometimes they are just thrown in.