How To Wire A 3 Pin Trailer Plug

The white wire must be attached to the trailer in order to ground and power the lights.

How to wire a 3 pin trailer plug.

A 7 way plug connects your trailer and tow vehicle and provides the required lights turn signals brake power battery hot lead reverse lights and ground. Following the standard method for wiring a trailer connector is vital to the safety of your vehicle while towing. Most of us aren t electricians but that doesn t mean wiring a trailer or replacing corroded wiring is beyond us. This type of connector is normally found on utvs atvs and trailers that do not have their own braking system.

Get it as soon as thu sep 24. Connecting the wrong color wires will result in mismatched taillight functions and confusion on the road. Attach the ground wire to the trailer. Cut the white wire short enough for attachment to the front of the trailer near the connector plug.

Wiring a 7 pin plug on your truck can be a little intimidating when you are looking at it from outside the box. 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. There is a lot wiring that you have to tie into your truck s wiring harness but it is easier to do than it seems. Strip the wire end back about a 1 2 inch and insert it into a terminal with a heat shrink tube.

Yellow and green are for left and right turns and braking. Use this 4 pin trailer wiring diagram to properly wire your 4 wire trailer plug. We ll walk you through the wiring process it s easier than you think. Note that this type of 4 pin connector is less common that 4 pin flat connector.

Above we have describes the main types of trailer wiring diagrams. 1 4 wire the first 4 pins white brown yellow green just like the 4 pin connector above. Below is the generic schematic of how the wiring goes. Free shipping on your first order shipped by amazon.

4 pin trailer wiring diagram. How to wire a 7 pin trailer plug by robert moore. 807 3 way flat trailer wire connectors 3 pin traile plug connector 36inch for led brake tailgate light bars hitch light trailer wiring harness extension connector 3 way flat socket 4 3 out of 5 stars 3. Start by cutting the white wire and attaching it to the trailer frame.

Installing the 4 pin trailer wires. One to two feet is good.