Electrical connector with transparent regions and corresponding inspection station

An electrical connector assembly comprising:

• a plug including pins, plug engagement arms configured to hold the pins in place, plug retainers configured to restrict movement of the plug engagement arms, a plug light pipe, and a plug housing surrounding at least the plug engagement arms and plug retainers and defining plug windows aligned on opposite sides of the plug housing that are transparent to at least some wavelengths of light;
• and
• a socket including receptacles, socket engagement arms configured to hold the receptacles in place, socket retainers configured to restrict movement of the socket engagement arms, a socket light pipe, and a socket housing surrounding at least the socket engagement arms and socket retainers and defining socket windows aligned on opposite sides of the socket housing that are transparent to at least some wavelengths of light.