"Early VIN" means that the panel does not have a line for full open like the late VIN does. Early VIN panels have "dots" instead of a "line". A non-spring loaded switch is the proper switch for this "early VIN" panel. See picture for details. Kit includes the following:
OEM W8 Dome light assembly tan in color
ECS Tuning Wiring kit (makes the W8 dome light modification as plug-n-play as possible)
ECS Assembled Kit
ECS Assembled Kit