trailer wiring colors 4 wire - IOT Wiring Diagram

A trailer’s wiring system is a crucial component for towing a load on the open road. It’s important to choose the right type of wire for your particular type of vehicle, as well as to be aware of the different colors used for wiring. If you’re towing a trailer with four wires attached to it, you need to understand the purpose of each type of wire so that you can be sure your trailer is properly hooked up and powered.

When dealing with trailers with four wires, you will likely come across the following wiring colors: brown, green, yellow, and white. The first color is brown, the hot wire or power source that carries the current from the vehicle’s electrical system. Brown is the positive wire and is connected directly to the battery. Then the green wire, the ground wire which returns the current back to the battery. Yellow is the left turn brake/blinker, and white is the right turn brake/blinker.

How to use these connections effectively is important to ensuring your trailer is safe when in motion. Trailers that don’t have proper functioning brakes or blinkers can be dangerous for other drivers on the road. Connecting the wires correctly can help ensure that your trailer is safe and running correctly. Be sure to consult the owner’s manual of both your vehicle and your trailer to find out the specific wiring requirements for your application. And remember to always use a professional if you don’t feel confident in making the wiring connections yourself. Knowing the wiring colors is only part of the equation.

Trailer Wiring Diagrams