This accounts for three of the colors in the wiring harness. The left and right turn signal lights should each have a different color.

Trailer Lights Wiring Diagram 4 Wire Wiring Diagram Images
4 wire to 7 wire trailer wiring. The red and blue wire can be used for brake control or auxiliary. 7 pin trailer wiring is one of the most popular wiring configruations particularly the traditional configuration versus the sae j2863. The 4 way on part etbc7 will plug into the 4 way on your vehicle and then you will need to connect the remaining wires. How to repair or replace 4 wire flat trailer wiring connector harness duration. There should be a common color for both the tail lights. It shows the components of the circuit as streamlined shapes and the power and signal connections between the devices.
Cut the four pin plug off of the trailer harness. Trailer electrical connectors come in a variety of shapes and sizes. The white wire is the ground and should be connected to the frame of vehicle. The basic purpose remains the same whether your truck and trailer is using a 4 way 5 way 6 way or 7 way connector. The remaining color is the ground wire. A wiring diagram is a streamlined traditional pictorial representation of an electrical circuit.
Verify the harness color codes at each tail light. If you need the complete 7 way wiring to operate you will need brake controller 7 4 way installation kit part etbc7. Assortment of 5 wire to 4 wire trailer wiring diagram. Provides a 4 way flat trailer connector at the back of your vehicle to power your trailers signal lights compatible with 5 pole 6 pole and 7 pole adapters sold separately ensures. 1 4 wire the first 4 pins white brown yellow green just like the 4 pin connector above. How to rewire a trailer with led lights.
Can also be used as custom wiring on trailers with 3 lightwire systems. 34 inch by 1 inch 6 way rectangle connectors right turn signal green left turn signal yellow taillight brown ground white. 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. Use this 7 pin trailer wiring diagram to properly wire your 7 pin trailer plug. By law trailer lighting must be connected into the tow vehicles wiring system to provide trailer running lights turn signals and brake lights. Install a 4 way flat on your vehicle with this splice in harnesspowered converter connects directly to battery to reduce strain on wiringpotted smt construction boosts water and vibration.
Use on a small motorcycle trailer snowmobile trailer or utility trailer.