7 Pin Flat Trailer Plug Wiring Diagram Nz

By | June 24, 2022



When you’re planning to tow or haul a trailer or caravan, it’s important to understand the 7-pin flat trailer plug wiring diagram NZ. Properly wiring your trailer or caravan will ensure that you safely arrive at your destination and avoid any accidents or mishaps. In this article, we’ll provide a clear breakdown of everything you need to know about wiring a 7-pin flat trailer plug.

The 7-pin flat trailer plug is the most commonly used type for towing trailers in New Zealand. It is designed with a round connector and seven pins arranged in two rows. Some of the pins are colour-coded to ensure easier wiring. The pins have a positive and negative function that needs to be connected correctly to the corresponding pins on the trailer or caravan.

In general, there should be four wires connected between the plug and the trailer, with the remaining three being used for lighting. The black wire should be connected to the earth pin, the brown wire to the tail light pin, the yellow/green wire to the left indicator pin, and the blue wire to the right indicator pin. The white wire should be connected to the fog light pin, the red wire to the reverse light pin, and the orange wire to the brake light pin.

Once all wires are connected, you’ll need to use a test lamp to check if the connections are functioning correctly. Connect the test lamp to the battery and then to each of the pins on the plug. If the test lamp lights up when connected to a pin, then the connection has been made correctly. It is important to properly connect all the wires to prevent any problems while towing.

The 7-pin flat trailer plug wiring diagram NZ provides a valuable source of information to ensure a safe and successful towing experience. By understanding and adhering to the wiring diagram, you can ensure that your trailer or caravan is wired correctly and safe on the roads.


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