Is there a wiring diagram for a trailer?

Is there a wiring diagram for a trailer?

Complete with a color coded trailer wiring diagram of each plug type, this guide walks through each available solution, including custom wiring, splice-in wiring and replacement wiring. If you’re looking to replace the wiring on your trailer, check out our trailer rewiring guide.

Where does the white wire go in a trailer?

The White Wire is the “Ground” or “Negative” wire connecting to the vehicle battery “minus” side. The trailer wiring diagram shows this wire going to all the lights and brakes. Also, it must connect with things (if included) that use the Aux Power and Back-up lights too.

Where do you mount a ground wire on a trailer?

When mounting a ground wire, choose an existing factory ground connection where other ground wires are connected or use a bolt to mount the wire directly to your vehicle’s chassis. Trailers are equipped with different plug types based on their electrical components.

How can I wire my trailer to my vehicle?

Unplug your vehicle’s factory wiring harness and plug in a Hopkins vehicle wiring harness. That’s how easy trailer wiring is with a Plug-In-Simple! wiring kit!

What kind of wiring does a 5 way trailer use?

They often use bonded wires for a reliable connection and have rubber construction to protect against the elements. The wiring is very similar, the only difference is the 5-way will have an extra blue auxiliary wire that is often used for backup lights.

What kind of power does a trailer use?

They supply power to the taillights, turn signals, brake lights, trailer brakes, reverse lights, auxiliary power and include a ground connection. They come in two variations, 7-Way round and 7-way with RV Blades. They look similar, but it is important to verify which one you have before replacing it.


Check out or trailer wiring diagrams for a quick reference on trailer wiring. The below information is for reference and is commonly used throughout the industry, but can vary depending on who built the trailer. You can use a circuit tester to verify connections. Trailer electrical connectors come in a variety of shapes and sizes.

What kind of wiring is used in a gooseneck trailer?

6-Way trailer connectors are often used on gooseneck trailers, but can be used for other types such as utility, boat trailers and 5th wheels. 6 way connectors include the basic connection of running lights, brake lights, turn signals and a ground wire.

How to wire a trailer with junction box?

Trailer Side 1 Step 1: Prepare for Trailer Wiring Installation Start by making sure you have everything you need to wire your trailer,… 2 Step 2: Locate or Install Junction Box If you’re replacing existing wiring and your trailer already has a junction box,… 3 Step 3: Make Trailer Connections More

How do you connect an electric trailer to a vehicle?

To connect the electric system of your trailer to the vehicle, you will be using special connector. Above we have describes the main types of trailer wiring diagrams. Below is the generic schematic of how the wiring goes. This type of connector is normally found on UTVs, ATVs and trailers that do not have their own braking system.


How does a trailer hook up to a tow vehicle?

This is accomplished by tapping into the tow vehicle’s electrical harness to transfer power to the trailer wiring system. Trailer connectors are used between the two to allow disengagement when not towing.

Where are the wire connectors on a trailer?

As viewed from core back side where wires are attached with screws. As viewed from core back side where wires are attached with screws. 7-Way trailer connectors are found on most recreational vehicles and are used on larger gooseneck, 5th wheel, boat and utility trailers.

What does an extra wire on a trailer do?

an extra pin allows using another extra function. As a rule, 5-Way flat connectors are used for trailers that feature surge brakes or hydraulic brakes. The extra wire, as a rule, is used to power backup lights. When it is plugged, it disengages hydraulic trailer actuator when you reverse, so the trailer brakes are off at that moment.

What kind of wiring is used on a 5 way trailer?

Used on pop up camper trailers or utility / boat trailers. 5 way tow vehicle side. 5 way trailer side. 3/4 inch by 1 inch 6 way rectangle connectors right turn signal (green), left turn signal (yellow), taillight (brown), ground (white). The red and blue wire can be used for brake control or auxiliary.