Fixture for retrofitting and wiring security alarm door jamb switches to security systems

A fixture for use in mounting a security switch in a door jamb mounting hole to extend a switch actuator outwardly from a door jamb surface to sense an open door, and wiring that switch into a security system, comprising in combination:

• a fixture barrel with a stud extending therefrom shaped for snugly fitting into the switch mounting hole and a shoulder shaped for abutting the door jamb surface for registering the depth of penetration of the stud,
• a guide hole for orienting a drill entering the fixture barrel and extending from the stud to hold a drill at a predetermined acute angle to the door jamb surface for directing the drill downwardly into a surface of the mounting hole extending into the door jamb to extend therefrom through underlying flooring, thereby to provide a wire passageway leading from the switch mounting hole and through the flooring to a security control system,
• a second stud extending from said barrel to fit snugly into the switch mounting hole, and
• a guide hole for orienting a drill entering the fixture barrel and extending from the stud at a predetermined angle greater than said acute angle to the door jamb surface for directing the drill downwardly at an angle into an inner surface of the mounting hole extending into the door jamb, thereby to provide means for routing a wire passageway channel leading from the switch mounting hole and axially toward the rear of the switch mounting hole so that system connecting wires extending through the wire passageway will pass adjacent to a switch body inserted into the switch mounting hole.