How to wire trailer plug and socket electrics

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TRAILER WIRING

This guide will help you understand the tow types of trailer Plug that are used to connect your trailer or caravan to your vehicle for all electrical functions, and help you to make he correct wiring connections

TYPE 7 PIN PLUG (12N)  (Black)

This plug is available in black plastic or aluminium and is connected to the Black cable coming from your trailer or caravan. There are seven individual insulated inner cables which are all coulred to give your trailer or caravan the lighting that is required by law.

  1. Yellow      Left hand indicator
  2. blue           Fog Light
  3. White        Earth
  4. Green        Right Hand Indicator
  5. Brown       Right Hand side Light
  6. Red           Brake Lights
  7. Black         Left Hand side Light

Note This Plug is not able to support Reverse lights

TYPE 7 PIN PLUG (12S) (GREY)

This plug is available in Black plastic or aluminium and is connected to the Grey cable coming from your caravan. There are seven individual insulated inner cables which are all coloured  to give your caravan the extra electrical connection for caravan services.

  1. Yellow       Reverse Light
  2. blue           Live Battery Feed
  3. White        Earth
  4. Green        Live Feed
  5. Brown       Spare
  6. Red           Fridge
  7. Black         2nd Earth

13 PIN PLUG

This Plug is available in Black plastic and is connected to the cable coming from your caravan, There are thirteen individual insulated inner cables which are connected to your caravan ot give your caravan the legal lighting and the extra electrical connection for caravan services.

  1. Yellow    Left Hand Indicator
  2. Blue        Fog Light
  3. White      Earth
  4. Green      Right Hand Indicator
  5. Brown     Right Hand side LightRed                                       
  6. Black       Left Hand Side Light
  7. Yellow     Reverse Light
  8. Green       Live Battery Feed
  9. Red          Ign Switched Feed (via Relay)
  10. Black        Earth for Pin 10
  11. None        Spare
  12. White        Earth for Pin 9

 

 

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