Performed troubleshooting on exterior lighting that was not functioning. After an extensive inspection above the drop ceiling, located a junction box containing a loose neutral connection. The neutral wires were not properly spliced under the existing wire nut. Re-spliced the neutral conductors and installed a new wire nut, restoring proper operation to the exterior lights. The original scope of work authorized by the customer included replacing a broken wall pack light on the back exterior of the building. After traveling to Home Depot to obtain a replacement fixture, the customer decided not to proceed with the light replacement. This resulted in additional travel time beyond the original troubleshooting scope.