4 Wire Basic Trailer Wiring Diagram

4 way flat molded connectors allow basic hookup for three lighting functions.

4 wire basic trailer wiring diagram. 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. By law trailer lighting must be connected into the tow vehicle s wiring system to provide trailer running lights turn signals and brake lights. The most common wire thickness for a trailer is 16 gauge but i bought thicker wiring for added durability. Buy a 4 pin wiring kit with wires at least twenty feet in length so it s long enough for your trailer.

Right turn signal stop light green left turn signal stop light yellow taillight license side marker brown and a ground white. Connect brown wire to vehicle tail light wire yellow wire to vehicle left stop and turn wire and green wire to vehicle right stop and turn wire. I m not able to track down a wiring diagram for your chevy truck. 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.

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. Trailer wiring kit and supplies. I have a separate wire for brake lights.

Trailer wiring diagrams trailer wiring connectors. Standard color code for wiring simple 4 wire trailer lighting. 1 4 wire the first 4 pins white brown yellow green just like the 4 pin connector above. You will then be able to match them up to the 4 way harness.

Trailer light and harness installation instructions vehicle connection connect the wires of the 4 wire trunk connector to the vehicle wiring. Let s see what types of connectors the trailer light wiring industry uses today. The basic purpose remains the same whether your truck and trailer is using a 4 way 5 way 6 way or 7 way connector. Trailer wiring diagrams 4 way systems.

Start by cutting the white wire and attaching it to the trailer frame. This automobile is designed not only to travel one location to another but also to take heavy loads. 4 way utility trailer wiring diagram utility trailer 4 way wiring diagram people today comprehend that trailer is a car comprised of very complicated mechanics. Yellow and green are for left and right turns and braking.

I have had to mess with trailer wiring for years once or twice a year anyway.