ISO 1185 is an international standard that specifies the requirements for 7-pin connectors of type 24 N. These connectors are used for the electrical connection between towing vehicles and trailers with a nominal voltage of 24 volts. The standard defines the dimensions, the assignment of the contacts (pins), and the technical requirements for these plugs and sockets. By following these specifications, the interchangeability and reliability of the electrical connections are ensured.

Important points of ISO 1185:

  • Norm: ISO 1185
  • Spanning: 24 Volts
  • Usage: For basic lighting systems such as indicators, brake lights, rear lights, and fog lights.
  • Purpose: Ensures a standardized and reliable electrical connection between the towing vehicle and the trailer.

Pin configuration and functions:

  1. Ground (white): Provides the common ground connection.
  2. Left tail light, license plate lighting (black): Controls the left tail lights and license plate lighting of the trailer.
  3. Left turn signal (yellow): Controls the operation of the trailer's left turn signal.
  4. Brake light (red): Controls the operation of the trailer's brake lights.
  5. Right turn signal (green): Controls the operation of the trailer's right turn signal.
  6. Right rear light (brown): Controls the operation of the trailer's right rear lights.
  7. Trailer brake control (blue): Operates the trailer's braking system.

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