Apparatus, systems, and methods for maintaining power to a light string having light units arranged in series

摘要

A light unit for use in a series circuit has a mechanical switch for providing an alternate circuit path around the leads of a bulb when the bulb is loose or removed. The mechanical switch is biased toward a closed position such that, when the bulb is removed from the light unit, the switch closes to provide the alternate circuit path. The switch is displaced to an open position when a bulb is secured to the light unit to break the alternate circuit path and route electricity through the bulb. A shunt assembly having a high resistance element and a retainer can be secured within a socket cavity of the light unit.