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  2. Trailer connectors in North America - Wikipedia

    en.wikipedia.org/wiki/Trailer_connectors_in...

    Flat 5-pin connector (Towing vehicle side) This contact is not as common, but is compatible with the 4-pin connector in the way that a towing vehicle with this connector can be connected to a trailer with the 4-pin flat plug. The extra connection is often used to block the surge brakes when reversing with the trailer. #

  3. ISO standards for trailer connectors - Wikipedia

    en.wikipedia.org/wiki/ISO_standards_for_trailer...

    7-pin ISO 1724 trailer connector type 12N (Towing vehicle side). This connector uses a mix of pin and socket terminals. Physical design according to standard ISO 1724. [4] [8] The 7-pin connector uses all 7 pins on newer trailers according to the ISO standard. [9] [10] On older trailers there's sometimes a 5-wire setup using a 7-pin connector.

  4. Trailer connectors in Australia - Wikipedia

    en.wikipedia.org/wiki/Trailer_connectors_in...

    The image of the 7 and 12 pin flat plugs are from the cable entry view (and possibly the images of the round connectors too). Please see reference [2] (VSB1 section 14) for front image. Reference [1] Narva wiring diagrams also have the diagrams cable entry view. If you want the front view images in colour see [3]

  5. Trailer connector - Wikipedia

    en.wikipedia.org/wiki/Trailer_Connector

    A trailer connector is a multi-pole electrical connector between a towing vehicle (car, truck) and a trailer. It is intended primarily to supply automotive lighting on the trailer, but also provide management and supply to other loads. It is also referred to as "trailer wire," "trailer cable," or "trailer connecting cable."

  6. NEMA connector - Wikipedia

    en.wikipedia.org/wiki/NEMA_connector

    NEMA 7 devices are three wire/prong (hot-neutral-ground) connectors rated at 277 V. The 15 A 7-15 plug has the crowsfoot current carrying pins of the Type I plug, but with a U-shaped earth pin. The 7-20 version has an enlarged line/hot pin. 7-30 is a larger diameter connector, with an L-shaped neutral, while the 7-50 has an enlarged neutral pin ...

  7. ISO 11446 - Wikipedia

    en.wikipedia.org/wiki/ISO_11446

    Ground for pin 9 [a] ISO 11446:2004 specifies a 13-pole electrical connector between towing and towed vehicles with 12 volt electrical system . It was developed in 1987 by Erich Jaeger [ 1 ] to replace older 7-pin plugs.

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