7 Pin Trailer Plug Wiring Diagram Australian Standards

By | March 16, 2023

Trailer plug wiring diagrams are essential for ensuring your trailer is wired correctly and safely. Knowing the Australian Standard for 7 pin trailer plug wiring is critical for anyone towing a trailer. Whether you're a caravan owner, a professional trailer manufacturer, or a DIY enthusiast, it's important to be aware of the wiring requirements for your specific application.

The Australian Standard for 7 pin trailer plug wiring is AS4177.2-2004. This standard provides the framework for the wiring of all trailers in Australia. It covers the requirements for both single and multiple trailer combinations, as well as the colour coding of the required wires. The diagram below outlines the seven pins and their respective functions:

Pin 1: Left Turn Indicator
Pin 2: Right Turn Indicator
Pin 3: Auxiliary Power
Pin 4: Left Taillight
Pin 5: Right Taillight
Pin 6: Brake Lights
Pin 7: Reverse Light

The 7 pin trailer plug wiring diagram also specifies the type of cable that should be used for each connection. For instance, the left turn indicator should use a red/white striped wire, while the right turn indicator should use a green/white striped wire. It's important that the correct type of cable is used to ensure that the trailer will operate safely and reliably.

It's important to remember that the 7 pin trailer plug wiring diagram is just a guide. Depending on the specific application, it may be necessary to make additional connections or use different types of cables. If you're unsure of how to wire your trailer, it's best to consult with a professional who can provide expert advice. With the right knowledge and equipment, you can make sure that your trailer is wired correctly and safely.


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