Features: 1.Application: The 16 pin OBD2 to 8 or 9 pin GREEN or BLACK adapter cable plug is a replacement for Mack Heavy Trucks 2013 or later models. 2.Function: Allows for connection of the 8 or 9 pin cables diagnostic port on heavy trucks to the 16 pin OBD II type diagnostic connector on heavy trucks. 3.Material: The OBD2 cable is made of durable ABS material to ensure wear resistance, impact proof and high electrical conductivity. 4.Adapter Cable Design: This cable adapter is designed with 6 pins and is connected to support ELD or diagnostic testing. 5.Fine Workmanship: Professional manufactured, exquisite workmanship with unique design, ensure stable performance and high reliability. Specification: Item Type: 16pin to 8/9pin OBD2 Cable Material: ABS Fitment: Replacement for Mack Heavy Trucks 2013-up Pins: Pin A = GROUND Pin B = +12V Pin C = J1939/CAN High + Pin D = J1939/CAN Lo Pin F = J1708/J1587 High + Pin G = J1708/J1587 LO - The 6 pins can be connected to support ELD or diagnostic tests