The Truck-Lite 99 Series has been designed as a closed system by integrating a molded plug with two sealing surfaces, rather than just one. This new two-seal plug keeps moisture and debris out of the plug, guarding against corrosion.
The 99 Series uses a clamp, also serving as the mounting bracket that wraps around the width of the plug to ensure that the connection is secure. Typical harness clamps only wrap around the junction itself so the wider clamp holds the joint more securely, resulting in a more reliable connection.
Truck-Lite is the first harness manufacturer to design a trapezoid-shaped connection, which makes installation quick and easy, and it allows the operator to be confident that he has proper pin alignment and a positive lock. Since most harness cable connectors are round, it is sometimes difficult for an operator to be assured of a positive pin connection from underneath the trailer.