ISO 12098:2020 provides the dimensions, outlines the contact allocation, and specifies the testing requirements for 15-pole connectors designed for the electrical connection of equipment other than braking systems and the running gear of towing and towed vehicles operating at a nominal supply voltage of 24 V. It also details a park socket intended for receiving and storing the plug when it is disconnected, as well as a method for adapting between 7-pole and 15-pole connectors.
