Abstract: Provided in this disclosure is an electrical bus system for use with a box light. The system includes a mounting channel having a pair of bus bars that define positive and neutral electrical conductors for supplying electricity. Electrical modules are configured for variable positioning along the mounting channel. Each of the electrical modules includes an end cap configured to engage the mounting channel. A protrusion extends away from the end cap for insertion into the mounting channel and for securing the end cap to the mounting channel at a selected position. A pair of terminal sockets makes electrical contact with the bus bars. A socket receives and supports an electrical component, preferably an LED light stick. The socket supports electrical connections to the terminal sockets for receiving and supplying power to the electrical component.