25 April 2025

All you need to know about the 13-Pin Plug on your trailer

The 13-pin plug is the modern standard for trailers. This blog explains why Vlemmix Trailers uses it, the difference with 7-pin plugs, and how to connect it properly. Including free wiring diagram!

All You Need to Know About the 13-Pin Plug on Your Trailer

When you purchase a Vlemmix trailer, you’ll notice it comes with a 13-pin plug as standard. This type of plug is essential for powering the lights and additional functions of your trailer. In this blog, we explain what a 13-pin plug is, why we use it, and how to wire it correctly.

What is a 13-pin plug?

A 13-pin plug is the modern standard for trailers, boat trailers, and other towed vehicles. Compared to the older 7-pin plug, it offers more connections — such as reverse lights, permanent power, and power supply for interior lights or a cool box.

What’s the difference between a 7-pin and a 13-pin plug?

Plug Type Functions
7-pin Basic lighting: indicators, brake lights, fog light
13-pin All 7-pin functions + reverse light, constant power, switched power, etc.

For modern cars and trailers, the 13-pin system is the safer and more complete choice.

Why do Vlemmix trailers use a 13-pin plug?

Our trailers are built for professional use and maximum convenience. Whether it’s a boat trailer, tiny house trailer or machine trailer — we want you to hit the road fully equipped and safely. That’s why every Vlemmix trailer comes standard with a 13-pin plug.

How to connect a 13-pin plug?

Wiring a 13-pin plug correctly requires precision. Each of the 13 pins serves a unique function. Need help? Download our wiring diagram for the 13-pin trailer plug below:

Download the wiring diagram (PDF)

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