051-0132-203 is a green convex lens cap component for the Dialight 378 Series indicator base assembly. It features a translucent green lens with a convex optical design and is compatible with the S6 double contact bayonet base mounting system. The assembly includes brass solder terminals with hot tinned finish, brass housing with black nickel finish, and a watertight screw-on design that meets MIL-L-3661C requirements. The component operates at 24V to 250V (bulb dependent) and is designed for front-facing mounting in a 1-inch clearance hole with an internal-tooth lockwasher and white nickel-finished brass mounting nut. This indicator is commonly used in ground vehicles, power distribution centers, command and control centers, and aircraft applications where reliable visual indication and environmental sealing are required.