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A number of ISO standards cover trailer connectors, the electrical connectors between vehicles and the trailers they tow that provide a means of control for the trailers. These are listed below, with notes on significant deviations from them that can cause problems. == Trailer connectors between the trailer and passenger car, light truck or heavy trucks with 12V systems == In Europe, both 7-pin (ISO 1724) and 13-pin (ISO 11446) are common. The reason that the 13-pin exists is that the 7-pin is not able to provide all expected services. These connectors are designed for 12V, but exceptions may exist where both 6V and 24V exists. Vehicles and trailers with 6V can use the 7-pin or 5-pin connector, but these are rare today. Note that the heavy trucks that may have 12V systems are usually older (Vintage vehicles) or on non-European markets. The color coding is a recommendation and may be different on your particular vehicle. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「ISO standards for trailer connectors」の詳細全文を読む スポンサード リンク
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