Trailer Light Wiring Diagram 4 Wire

The red and blue wire can be used for brake control or auxiliary.

Trailer light wiring diagram 4 wire. 800 x 600 px source. 7 pin this is an excellent in depth video on how to wire a 7 way round trailer plug that includes wiring diagrams. An extra pin allows using another extra function. Use on a small motorcycle trailer snowmobile trailer or utility trailer.

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 electrical connectors come in a variety of shapes and sizes. The basic purpose remains the same whether your truck and trailer is using a 4 way 5 way 6 way or 7 way connector. Rather than inspecting the old wires that were already corroded and falling apart i bought new 4 way trailer wiring and installed the electric myself.

Installing 4 pin trailer wiring. The original wiring on my boat trailer was damaged and installed incorrectly by the previous owner. 1 4 wire the first 4 pins white brown yellow green just like the 4 pin connector above. 5 way trailer wiring diagram allows basic hookup of the trailer and allows using 3 main lighting functions and 1 extra function that depends on the vehicle.

4 pin this is one of the better videos we have come across that shows how to wire the tail lights on a utility trailer with a 4 way trailer wire connection. 3 4 inch by 1 inch 6 way rectangle connectors right turn signal green left turn signal yellow taillight brown ground white. Some of the lights were out but the light bulbs were fine. 5 wire trailer wiring diagram.

Installing the 4 pin trailer wires. You must check the trailer manual to see if the wiring is correct but normally the white wire is called the ground wire while the brown wire is used for tail lights. 5 wire trailer plug 7 prong trailer wiring 4 size. Yellow and green are for left and right turns and braking.