The Connector is a 16-pin, electronic interface that features two rows of eight female pins and a groove between them. The D-shaped port comes in two variations.
Type A has the groove running its entire length and can handle 12 volt systems.
Type B can easily do 24 volts with its spit groove. Despite having room for 16 pins , your connector may only have a few of them available . These differences come from the OBD2 transmission protocol it uses .
ISO - VPW - PWM - CAN