Where Does The Yellow Wire Go On A Trailer Plug



Trailer plugs are essential components of trailer wiring systems, providing a secure connection between the tow vehicle and the trailer. Plugging up a trailer plug correctly is essential for a safe and reliable tow, but many people are unsure about where to place the yellow wire on a trailer plug. Knowing exactly what to do with the yellow wire can make trailer wiring projects much easier.

The simplest answer to the question of “Where does the yellow wire go on a trailer plug?” is that it goes into the auxiliary circuit terminal. The auxiliary circuit is usually a 12V circuit which is used to power additional features and accessories such as interior lighting and power outlets. It is important to note that there can be variation in trailer plug types, codes, and sizes. Depending on the make and model of the trailer, the auxiliary circuit could also be labeled as ‘AUX’, ‘A’, or ‘ACC’.

When wiring up the trailer plug, it is important to attach the yellow wire to the correct terminals. Not doing so could result in damage to the trailer’s electrical system. Additionally, wiring a trailer plug incorrectly will make it difficult to troubleshoot any problems that may arise down the road. Before starting any wiring project, you should consult an authorized professional to ensure proper installation. With a little bit of research and the right tools, however, anyone can install the yellow wire on a trailer plug successfully and enjoy the benefits of a properly wired trailer system.


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