4 Wire Trailer Light Wiring

Start by cutting the white wire and attaching it to the trailer frame.

4 wire trailer light wiring. Can also be used as custom wiring on trailers with 3 light wire systems. 3 4 inch by 1 inch 6 way rectangle connectors right turn signal green left turn signal yellow taillight brown ground white. Installing the 4 pin trailer wires. Trailer electrical connectors come in a variety of shapes and sizes.

Wiring instructions for optronics 4 1 2 inch round trailer stop turn and tail light st40rb installing a brake controller on a 2002 dodge ram 1500 equipped with a factory 4 way can trailer 4 way be ran to trailer with 8 wires for trailer wiring. Let s see what types of connectors the trailer light wiring industry uses today. By law trailer lighting must be connected into the tow vehicle s wiring system to provide trailer running lights turn signals and brake lights. 1 4 wire the first 4 pins white brown yellow green just like the 4 pin connector above.

Abn trailer wire extension 20ft 4 way 4 pin plug flat 20 gauge hitch light trailer wiring harness extender 4 7 out of 5 stars 858 10 69 10. 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. We ll walk you through the wiring process it s easier than you think. 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.

A 4 way plug connects your trailer and tow vehicle and provides the required running lights turn signals ground and brake lights. The red and blue wire can be used for brake control or auxiliary. The basic purpose remains the same whether your truck and trailer is using a 4 way 5 way 6 way or 7 way connector. 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.

Yellow and green are for left and right turns and braking.