They also provide a wire for a ground connection. As the name implies they use four wires to carry out the vital lighting functions.
3 Prong Pigtail Wire Plugs For Truck Trailer Bus Boat Rv Stop Turn Tail Lights 2pcs
Semi trailer wiring color code. Jun 27 2017 7 pin trailer plug light wiring diagram color code. Lets see what types of connectors the trailer light wiring industry uses today. 4 way trailer connectors are. I do have a handy trailer wiring faq article that would be perfect for you. In the trailer wiring diagram and connector application chart below use the first 5 pins. Certainly that works but make sure to note it on the trailer because blue is the color for brakes.
White ground return 8 gauge. Trailer wiring color code connector function color suggested minimum wire gauge where to attach vehicle side where to attach trailer side 4 way 5 way 6 way 7 way 7 way 6 way 5 way 4 way right turn green 18 16 right turn of vehicles wiring harness trailers right turn signal left turn yellow 18 16. 4 way trailer connectors are typically used on small trailers such as boat snowmobile utility and other trailers that that do not use brakes. I have also included a picture that shows the typical wiring diagram of a 7 way round pin trailer side connector. Easy way to remember wiring of a 7 way rv plug rv standard. Also some trailers with hydraulic brakes use this 5th pin to disable the brakes when the vehicle is reversing.
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. 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. The four wires control the turn signals brake lights and taillights or running lights. Darren will be explaining the rv color code. Note that there is a traditional color code spec and an rv color code spec. The wiring color codes and wire gauge recommendations for the pollak heavy duty 7 pole round pin trailer wiring connector item pk11700 are listed below.
I have included a link to it. 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.
Gallery of Semi Trailer Wiring Color Code
