This switch controls the front work lights by completing the circuit between the battery supply and the lamp relay. It is mounted in the dashboard panel and is part of the tractor's electrical system. When the switch fails, the work lights either remain off or become intermittent, which reduces visibility during night or low-light operations. The switch is manufactured by Bepco and is built to match the original component's contact rating and housing dimensions, so it fits the existing panel cutout and wiring harness without modification.