Note that this type of 4 pin connector is less common that 4 pin flat connector. The four wires control the turn signals brake lights and taillights or running lights.

Trailer Wiring Kit Diagram Wiring Diagram
Four pin trailer wiring diagram. 4 pin trailer wiring diagram this type of connector is normally found on utvs atvs and trailers that do not have their own braking system. 4 pin trailer light wiring diagram. Installing a brake controller on a 2002 dodge ram 1500 equipped with a factory 4 way. Three wires are for the trailer while the last wire is the ground wire. Use on a small motorcycle trailer snowmobile trailer or utility trailer. 4 way trailer connectors are typically used on small trailers such as boat snowmobile utility and other trailers that that do not use brakes.
Can also be used as custom wiring on trailers with 3 lightwire systems. 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. Replacement 4 pole trailer connector for utility trailer with 5 wire wishbone wiring setup. With this system you have four wires that work together with the vehicles electrical system via a. Can trailer 4 way be ran to trailer with 8 wires for trailer wiring. The most common wire thickness for a trailer is 16 gauge but i bought thicker wiring for added durability.
The circuits are for left and right brake lights and running lights. Installing a trailer wiring harness on a 2012 ford focus. The ground wire should be run from the frame of the. 34 inch by 1 inch 6 way rectangle connectors right turn signal green left turn signal yellow taillight brown ground white. As a rule you can find these connectors on the older trailers and older vehicles built in the us. This vehicle is designed not only to travel one place to another but also to carry heavy loads.
This report will be discussing 4 prong 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. 1 4 wire the first 4 pins white brown yellow green just like the 4 pin connector above. Four pin trailer wiring install wiring diagram info three wire system. Many trailers have three circuits. They also provide a wire for a ground connection.
Wiring a 5 way trailer connector by color. The red and blue wire can be used for brake control or auxiliary. 4 pin connectors are the standard used for most trailers. 4 way trailer connectors are. With a converter you can send signals for stop turn and trail. As the name implies they use four wires to carry out the vital lighting functions.
Trailer wiring diagrams trailer wiring connectors. 4 prong trailer wiring diagram 4 pin trailer wiring diagram flat 4 pin trailer wiring diagram round 4 pin trailer wiring diagram with brakes folks comprehend that trailer is a car comprised of very complicated mechanisms. 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. Buy a 4 pin wiring kit with wires at least twenty feet in length so its long enough for your trailer. The system is present on many.