System for detecting the integrity of a lighting circuit

A status monitoring connector configured to be coupled to an electrical system of a tractor and an electrical system of trailer comprising an external device, the status monitoring connector comprising:

• a sensing unit coupled to the external device and configured to sense an input voltage and an input current at the external device;
• a monitoring unit coupled to the sensing unit and configured to determine a normal operation of the external device based on the sensed voltage, and, in response, to detect an undercurrent condition of the external device based on the sensed input current;
• a status indicator coupled to the monitoring unit and configured to display a fault indication in response to the monitoring unit detecting the undercurrent condition;
• a housing configured to accommodate the sensing unit and the monitoring unit;
• a first end coupled to the housing and configured to couple to the electrical system of the tractor;
• and
• a second end coupled to the housing and configured to couple to the electrical system of the trailer.