Industry Standard Wiring Configuration for the 4

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4-Way trailer connectors are typically used on small trailers such as boat, snowmobile, utility and other trailers that that do not use brakes. As the name implies, they use four wires to carry out the vital lighting functions. The four wires control the turn signals, brake lights and taillights or running lights. They also provide a wire for a ground connection. 4-way trailer connectors are ...

Installing the 4-Pin Trailer Wires. You must check the trailer manual to see if the wiring is correct, but normally the white wire is called the ground wire, while the brown wire is used for tail lights. Yellow and green are for left and right turns and braking. Start by cutting the white wire and attaching it to the trailer frame.

Round 1 1/4" diameter metal connector allows 1 or 2 additional wiring and lighting functions such as back up lights, auxiliary 12v power or electric brakes. Note: The black (sometimes red) 12v and blue electric brakes wire may need to be reversed to suit the trailer.

Assortment of 5 wire to 4 wire trailer wiring diagram. A wiring diagram is a streamlined traditional pictorial representation of an electrical circuit. It shows the components of the circuit as streamlined shapes, and the power and signal connections between the devices.

Buy a 4-pin wiring kit with wires at least twenty feet in length, so it's long enough for your trailer. The most common wire thickness for a trailer is 16 gauge, but I bought thicker wiring for added durability. Depending on the size of your trailer and the number of lights, you might want to check on the Internet for the recommended gauge for your specific trailer.

To wire your vehicle, you would match the wiring layout you created on the trailer by wiring a vehicle end 4-Way round connector like part # PK11410 as a mirror image of the trailer connector. If you need some additional wire or would just like to replace your current wiring while you are changing out the connector, we offer bonded 4 wire # 16-4B-1 by the foot.

1-4 Wire the first 4 pins (White, Brown, Yellow, Green) just like the 4-pin connector above. 5. Blue = Electric Brakes or Hydraulic Reverse Disable (See Blue Wire Notes below.) In the Trailer Wiring Diagram and Connector Application Chart below, use the first 5 pins, and ignore the rest.

Trailer Wiring Diagram. To connect the electric system of your trailer to the vehicle, you will be using special connector. Above we have describes the main types of trailer wiring diagrams. Below is the generic schematic of how the wiring goes. 4 pin trailer wiring diagram

Complete with a color coded trailer wiring diagram for each plug type, this guide walks through various trailer wiring installation solution, including custom wiring, splice-in wiring and replacement wiring. If your vehicle is not equipped with a working trailer wiring harness, there are a number of different solutions to provide the perfect fit for your specific vehicle.