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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. SAE J1772 - Wikipedia

    en.wikipedia.org/wiki/SAE_J1772

    The proximity pin, PP (also known as plug present), as shown in the SAE J1772 example pinout, describes the switch, S3, as being mechanically linked to the connector latch release actuator. During charging, the EVSE side connects the PP–PE loop via S3 and a 150 Ω R6; when opening the release actuator a 330 Ω R7 is added in the PP–PE loop ...

  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. Knob-and-tube wiring - Wikipedia

    en.wikipedia.org/wiki/Knob-and-tube_wiring

    [4] [citation needed] This direct routing method has the advantage of reduced cost by allowing use of the shortest possible lengths of wire, but the major disadvantage is that a detailed building wiring diagram is needed for other electricians to understand multiple interwoven circuits, especially if the wiring is not fully visible throughout ...

  6. ISO standards for trailer connectors - Wikipedia

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

    [4] [8] The 5-pin has a design and pin layout that is identical to the 7-pin ISO 1724 connector with the exception for the lack of pin 1 (L) and pin 4 (R). This connector is sometimes present on vintage vehicles and the actual wiring may be completely different from what the standard states which means that measuring before connecting is a good ...

  7. Keycard lock - Wikipedia

    en.wikipedia.org/wiki/Keycard_lock

    A keycard lock is a lock operated by a keycard, a flat, rectangular plastic card. The card typically, but not always, has identical dimensions to that of a credit card , that is ID-1 format . The card stores a physical or digital pattern that the door mechanism accepts before disengaging the lock.

  8. Power door locks - Wikipedia

    en.wikipedia.org/wiki/Power_door_locks

    Power door locks (also known as electric door locks or central locking) allow the driver or front passenger to simultaneously lock or unlock all the doors of an automobile or truck, by pressing a button or flipping a switch. Power door locks were introduced on the luxury Scripps-Booth in 1914, but were not common on luxury cars until Packard ...

  9. Interchangeable core - Wikipedia

    en.wikipedia.org/wiki/Interchangeable_core

    The electronic lock core is the same as the mechanical lock core, which can be directly modified into the existing mechanical lock. Different from the mechanical lock core, the electronic lock core integrates a miniature electronic single-chip microcomputer, there is no mechanical keyhole, and only three metal contacts are retained. [4] The ...