道路车辆 牵引车和挂车之间的电连接器（7芯）第2部分：12 V标称电压车辆的制动系统和行走系的连接

Road vehicles一Connectors for the electrical connection of towing and towed vehicles（7-pole）—Part 2: Connectors for braking systems and running gears of vehicles with 12 V nominal supply voltage