The red and blue wire can be used for brake control or auxiliary. The 4 way above is a basic and most common scenario but what if you have more items that require wiring.
How To Wire Trailer Lights Wiring Instructions
Basic 4 wire trailer wiring diagram. The most common wire thickness for a trailer is 16 gauge but i bought thicker wiring for added durability. 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. 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. 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. Lets see what types of connectors the trailer light wiring industry uses today.
34 inch by 1 inch 6 way rectangle connectors right turn signal green left turn signal yellow taillight brown ground white. Can also be used as custom wiring on trailers with 3 lightwire systems. 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. 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 diagrams trailer wiring connectors. Buy a 4 pin wiring kit with wires at least twenty feet in length so its long enough for your 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. 1 4 wire the first 4 pins white brown yellow green just like the 4 pin connector above. 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. 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. Use on a small motorcycle trailer snowmobile trailer or utility trailer. To wire a trailer the first step is to determine what components on the trailer need 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. Of course the more items you have the more poles you will need on your connector.
Gallery of Basic 4 Wire Trailer Wiring Diagram
