4 Wire Trailer Plug Wiring Diagram

6 way systems round plug.

4 wire trailer plug wiring diagram. A flat 4 plug for 4 wire trailers a flat 5 plug and a round 5 plug for 5 wire trailers. Use this 4 pin trailer wiring diagram to properly wire your 4 wire trailer plug. Start by cutting the white wire and attaching it to the trailer frame. Following the standard method for wiring a trailer connector is vital to the safety of your vehicle while towing.

A 4 wire system will not use the 5th blue or red wire. A wiring diagram is a streamlined traditional pictorial representation of an electrical circuit. Installing the 4 pin trailer wires. Connecting the wrong color wires will result in mismatched taillight functions and confusion on the road.

1 4 wire the first 4 pins white brown yellow green just like the 4 pin connector above. Trailer wiring kit and supplies. They can be purchased as a standalone plug for the truck or trailer or as a complete loop with both the plug and the socket included. It shows the components of the circuit as streamlined shapes and the power and signal connections between the devices.

Round 1 1 4 diameter metal connector allows 1 or 2 additional wiring and lighting functions such as back up lights auxiliary 12v power or electric brakes. 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. Traditional trailer with brakes use a 5 pin connector. There are many types of plugs used in the motorcycle trailer industry but cars almost exclusively use a flat 4 plug.

The most common wire thickness for a trailer is 16 gauge but i bought thicker wiring for added durability. The pictures below show the 3 most common plugs for motorcycle trailers. 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. Yellow and green are for left and right turns and braking.

Assortment of 5 wire to 4 wire trailer wiring diagram. Check with a test light or vom.