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  2. Trailer connectors in North America - Wikipedia

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

    7-pin round blade connector (SAE J2863) This is common for RVs and other large trailers which have additional loads beyond the basic for tail lights and brake/turn signals. The standard is defined by SAE J2863, Automotive Trailer Tow Connector. Reversing lamps, control current to block surge brakes when reversing.

  3. ISO standards for trailer connectors - Wikipedia

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

    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 13-pin version being phased in is newer, provides more services than the 7-pin, a more positive locking and also better protection against moisture and contamination.

  4. ISO 11446 - Wikipedia

    en.wikipedia.org/wiki/ISO_11446

    Trailer Presence Detection [c] Pin 13. 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.

  5. Trailer connectors in Europe - Wikipedia

    en.wikipedia.org/wiki/Trailer_connectors_in_Europe

    Multicon [1] Feder and Multicon WeSt (Welt Standard) connectors are precursors to ISO 11446 in a design that is intended to be compatible with ISO 1724.This means that if a towing vehicle has an outlet of this type it should be able to connect a trailer with a standard 7-pin or 5-pin connector according to ISO 1724, provided that the trailer coupling follows the standard and that the trailer ...

  6. NEMA connector - Wikipedia

    en.wikipedia.org/wiki/NEMA_connector

    The NEMA TT-30 (TT stands for Travel Trailer) connector is a 120 V 30 A recreational vehicle standard (hot-neutral-ground), also known as RV 30. The TT-30R receptacle is commonly available in nearly all RV parks in the United States and Canada, and all but the largest RVs manufactured since the 1970s use this plug to connect to power feeds.

  7. Trailer connectors in military organizations - Wikipedia

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

    Trailer connector according to NATO STANAG 4007. NATO uses a 12-pin connector [NATO 1] [NATO 2] according to STANAG 4007. [1] However, note that there are often deviations from the standard depending on which country it is applied, which means that the table below may not be accurate.

  8. 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." [1]

  9. California State Route 121 - Wikipedia

    en.wikipedia.org/wiki/California_State_Route_121

    California State Route 121. State Route 121 (SR 121) is a state highway in the U.S. state of California. It runs through the Wine Country region of Sonoma and Napa counties. Its southern terminus is at State Route 37 at Sears Point, and its northern terminus is at State Route 128 near Lake Berryessa. SR 121 passes through the Carneros region of ...