BS ISO 11446-1:2012
道路车辆.拖车和拖拽车的电气连接用连接器.不用于交叉涉水的带12 V名义电压的车辆用13极连接器
Road vehicles. Connectors for the electrical connection of towing and towed vehicles. 13-pole connectors for vehicles with 12 V nominal supply voltage not intended to cross water fords