Youve connected the trailer to the vehicle but the turn signals and brake lights dont work. On a four prong plug one prong connects to the right turn signal one to the left and one to the tail lights.
Trailer Towing Wiring Connector 7 Way European Round To Flat 4 Conversion Plug Harness For Discovery 1 And Series 2 Range Rover P38 And Classic
Wiring a 4 prong trailer plug. This type of connector is normally found on utvs atvs and trailers that do not have their own braking system. 4 pin trailer wiring diagram. 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. The basic purpose remains the same whether your truck and trailer is using a 4 way 5 way 6 way or 7 way connector. Allowing the tow vehicle to control the trailers lighting system. This accounts for three of the colors in the wiring harness.
You dont know if the wiring is bad or you have bad bulbs. Buy a 4 pin wiring kit with wires at least twenty feet in length so its long enough for your trailer. There should be a common color for both the tail lights. Yellow and green are for left and right turns and braking. Below is the generic schematic of how the wiring goes. To ensure your trailer has safe visible and legal lighting a trailer connector wiring adapter may be a necessary towing accessory.
Start by cutting the white wire and attaching it to the trailer frame. Note that this type of 4 pin connector is less common that 4 pin flat connector. By law trailer lighting must be connected into the tow vehicles wiring system to provide trailer running lights turn signals and brake lights. There must be a very consistent metal to metal contact for the ground wire. So do not run the wire from the bumper or the hitch of the car. 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.
Red black and blue are the three big wires then ther are five other i want to hook up a flat 4 prong hook up to my trailer which wires do i use my trailer connecter has four colors green brown white and yellow what goes where. Wiring the 4 pin. Verify the harness color codes at each tail light. To abide with state laws trailers must be equipped with the proper brake and tail lights and the trailer connector wiring adapter allows you to connect your vehicles electrical network. Cut the four pin plug off of the trailer harness. Installing the 4 pin trailer wires.
The most common wire thickness for a trailer is 16 gauge but i bought thicker wiring for added durability. I dont have a white wire coming out of my chevy 2006 pick up. The ground wire should be run from the frame of the vehicle to the trailer. Trailer electrical connectors come in a variety of shapes and sizes. The remaining color is the ground wire. Above we have describes the main types of trailer wiring diagrams.
The left and right turn signal lights should each have a different color. The 4 pin standard flat style connector has four contacts with a male pin on the vehicle side for the ground. One way to troubleshoot the voltage on the connector plug is to use a circuit tester.
Gallery of Wiring A 4 Prong Trailer Plug
