The red and blue wire can be used for brake control or auxiliary. Yellow and green are for left and right turns and braking.
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Troubleshoot Trailer Wiring By Color Code
4 wire trailer hitch wiring diagram. 5 way trailer wiring diagram allows basic hookup of the trailer and allows using 3 main lighting functions and 1 extra function that depends on the vehicle. 34 inch by 1 inch 6 way rectangle connectors right turn signal green left turn signal yellow taillight brown ground white. The four wires control the turn signals brake lights and taillights or running lights. Start by cutting the white wire and attaching it to the trailer frame. 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. This article shows 4 7 pin trailer wiring diagram connector and step how to wire a trailer harness with color code there are some intricacies involved in wiring a trailer.
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. Can also be used as custom wiring on trailers with 3 lightwire systems. An extra pin allows using another extra function. 4 way trailer connectors are typically used on small trailers such as boat snowmobile utility and other trailers that that do not use brakes. 1 4 wire the first 4 pins white brown yellow green just like the 4 pin connector above. Installing the 4 pin trailer wires.
4 way trailer connectors are. Some trailers come with different connectors for cars and some have different wiring styles. Use on a small motorcycle trailer snowmobile trailer or utility trailer. Buy a 4 pin wiring kit with wires at least twenty feet in length so its long enough for your trailer. They also provide a wire for a ground connection. The most common wire thickness for a trailer is 16 gauge but i bought thicker wiring for added durability.
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. 5 wire trailer wiring diagram. Wiring new 3 wire light on trailer to replace 2 wire light trailer wiring harness recommendation for a 2007 chevy colorado wiring instructions for optronics 4 12 inch round trailer stop turn and tail light st40rb. As the name implies they use four wires to carry out the vital lighting functions. 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. If you follow our trailer wiring diagrams you will get it right.
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.
Gallery of 4 Wire Trailer Hitch Wiring Diagram
