Trailer Plug Wiring Diagrams

  • Use the correct size cable for the plug/socket - most standard plugs will accept up to a 4mm auto cable easily.
  • The 12-pin flat plug have a second row of 5 larger points which will accept up to 6mm auto cable.
  • For best results, do NOT run battery charge lines, or fridge power lines through a 7-pin or 12-pin plug. The cable size that you are limited to by the plug/socket, are simply too small to carry enough current (amperage) to either charge batteries effectively, or run your fridge effectively. Use Anderson plugs and a minimum of 8 B&S cable for such requirements.
     

Small Round 7-Pin Trailer Plug Wiring Diagram

Cable Entry View - Looking from the REAR of the plug/socket

Small Round 7-Pin Trailer Plug Wiring Diagram

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7-Pin and 12-Pin Trailer Plug Wiring Diagram

Cable Entry View - Looking from the REAR of the plug/socket

7-Pin and 12-Pin Trailer Plug Wiring Diagram

7-Pin and 12-Pin Trailer Plug Wiring Diagram

Browse Trailer Plugs/Sockets Category
 

Large Round - 7-Pin and 5-Pin Trailer Plug Wiring Diagram

Cable Entry View - Looking from the REAR of the plug/socket

Large Round - 7-Pin and 5-Pin Trailer Plug Wiring Diagram

 

Heavy Duty - 7-Pin Trailer Plug Wiring Diagram

Cable Entry View - Looking from the REAR of the plug/socket

Heavy Duty - 7-Pin Trailer Plug Wiring Diagram

 

EBS - 7-Pin Round Trailer Plug Wiring Diagram

Cable Entry View - Looking from the REAR of the plug/socket

EBS - 7-Pin Round Trailer Plug Wiring Diagram

Source: Images courtesy of Narva