The red and blue wire can be used for brake control or auxiliary. 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.
Trailer Lights Wiring Diagram 4 Wire Wiring Diagrams
Basic 4 wire trailer wiring diagram. The 4 way above is a basic and most common scenario but what if you have more items that require wiring. Buy a 4 pin wiring kit with wires at least twenty feet in length so its long enough for your trailer. To wire a trailer the first step is to determine what components on the trailer need wiring. The basic purpose remains the same whether your truck and trailer is using a 4 way 5 way 6 way or 7 way connector. 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. The most common wire thickness for a trailer is 16 gauge but i bought thicker wiring for added durability.
1 4 wire the first 4 pins white brown yellow green just like the 4 pin connector above. Trailer wiring diagrams trailer wiring connectors. Various connectors are available from four to seven pins that allow for the transfer of power for the lighting as well as auxiliary functions such as an electric trailer brake controller backup lights or a 12v power supply for a winch or interior trailer lights. Lets see what types of connectors the trailer light wiring industry uses today. Use on a small motorcycle trailer snowmobile trailer or utility trailer. While the basic configuration is a 4 way flat connector that features one female and three male ends you may come across connectors with up to seven pins for additional functions that require wiring including electrically actuated brakes power source for a winch etc.
34 inch by 1 inch 6 way rectangle connectors right turn signal green left turn signal yellow taillight brown ground white. Of course the more items you have the more poles you will need on your connector. 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. 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. By law trailer lighting must be connected into the tow vehicles wiring system to provide trailer running lights turn signals and brake lights. Trailer wiring diagrams trailer wiring connectors various connectors are available from four to seven pins that allow for the transfer of power for the lighting as well as auxiliary functions such as an electric trailer brake controller backup lights or a 12v power supply for a winch or interior trailer lights.
Can also be used as custom wiring on trailers with 3 lightwire systems. 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.
Gallery of Basic 4 Wire Trailer Wiring Diagram
