Security & Fire Protection Systems/Intrusion Detection Unit Burglary 89XO


Greetings from Canada, Problem: The unit is located near ceiling outlet box.  Some time ago a chandelier attached to the box was removed.  I am trying to connect a new light fixture.  In the outlet box I have 5 wires, Ground, White and Black - main hydro wiring.  Two other wires are White/Green and Red, which I suspect belong to the sensor.  Nobody remembers original connections of the two additional wires.  I cannot find any wiring info for the sensor.  Any idea how to proceed with the hook up?

Slawomir Wycech

Hello Slawomir, and thanks for writing.

I don't have enough information to even make an educated guess. The two left over wires (after accounting for the main power for the light fixture) isn't enough to wire an intrusion detection device; it'd need a minimum of four conductors (two for power, and two for the alarm circuit).

Best advice is to have an electrician take a look, and try to determine the intended function of the other two wires.

Best Regards,


Security & Fire Protection Systems

All Answers

Answers by Expert:

Ask Experts


Dave Neuweiler


The design and application of burglary and fire systems for homes and businesses. Helping alarm owners understand how their system works. Helping to troubleshoot false alarm problems. Questions about monitoring issues.


Over a quarter century in the industry. Experience in installation, service, and monitoring centers. Training manager for a national protective services company; director of education and training for a national trade organization for for alarm dealers.


©2017 All rights reserved.