A modular overhead lighting system includes a raceway element and one or more interchangeable lighting modules capable of variable positioning relative to the raceway element. Multiple raceway conductors are mounted in the raceway element, with a portion of each raceway conductor being exposed along a lower surface thereof to facilitate continuously variable positioning of lighting modules. An electrical connector for establishing electrical connections between a raceway element and a lighting module includes multiple ridges incorporating electrical contacts configured to contact raceway conductors, and includes terminals to removably receive electrical wires permitting electrical communication between a lighting module and the raceway element.