The Definitive Guide to Trailer Plug Wiring Diagram South Africa

South Africa is a large country with different types of trailers. To ensure that electrical connections are made correctly, trailer plug wiring diagrams are needed to understand each connection's purpose. With the correct diagram, installing trailer wiring will be an easy task that anyone can do. In this article, we delve into the details of trailer plug wiring diagrams in South Africa and explore how they work.

Maintain Safety with Proper Trailer Plug Wiring Diagrams

Trailer wiring should always be done according to regulations set out by the government and relevant authorities. This helps to maintain safety on the roads and avoid potential risks. A trailer plug wiring diagram should clearly show the purpose of each terminal - something which may not be immediately apparent to the untrained eye. By understanding wiring diagrams, mistakes can be avoided and the correct installations can take place.

Types of Connections Used for Trailer Plug Wiring Diagrams

There are three main types of terminations used in trailer wiring diagrams South Africa: flat plugs, round plugs and pin plugs. A flat plug is the most commonly seen in traveling and domestic applications, whilst the round end allows more room for electricity to flow through, making it good for heavy-duty vehicles. Pin plugs are also commonly used for large recreational vehicles. Each type of plug has different terminals and needs to be wired up differently. Our table below explains the purpose of the different terminals.

Terminal No.	Purpose
1	Ground/earth return connection – black wire.
2	Stop/Brake/Tail Lamp feed – Red Wire.
3	Left Hand Indicator/Auxiliary–Yellow Wire.
4	Right Hand Indicator–Green Wire.
5	Reverse Lights– Blue.
6	Ground–White Wire.
7	Auxiliary Wire–Brown Wire.
8	Spare–Orange Wire.

Testing For Connections When Installing a Wiring Diagram

After wiring a trailer plug wiring diagram, it is important to test for continuity between each terminal and the appropriate receiver. If the diode light goes on, then the connection is working correctly. It is important to note that some trailer brake systems will require the use of a power Modulite® unit. These units are designed to protect the vehicle's wiring from any damage or faults caused by the connected trailer.

Conclusion

Knowing how to read trailer plug wiring diagrams is essential for anyone wanting to tow a trailer. The diagram will provide vital information for making necessary electrical connections and understanding the purpose of each terminal. By following the diagram's instructions as well as carrying out relevant testing, it is possible to have functional trailer wiring that works safely.

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