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How to Hook Up a Trailer - Chapter 9

How to Hook Up a Trailer - Towing 101 - CURT

How to Hook Up a Trailer

10 Easy-to-Follow Steps

Hooking up your trailer to your vehicle requires backing up to the trailer, connecting the coupler, securing the safety chains and plugging in the wiring harness. It requires patience and attention to detail.

In this guide, we will cover step-by-step how to hitch a trailer, as well as tips for hooking up a trailer by yourself and a pre-towing checklist.

If you don't have the proper equipment for towing yet, start with a trailer hitch!

Step 1: Find a Friend to Help

The first step when hitching up your trailer is to find a friend to help you. Having someone else outside the vehicle to give guidance will make the process much easier.

Before starting, agree on a set of signals for turning directions, when to back up and when to brake. Have your helper stand on the driver's side of the trailer, even with the trailer tongue, and make sure you can see him or her clearly before backing up.

Hitching Up a Trailer with a Friend

Step 2: Line up Your Vehicle

Position your vehicle so that it is in a straight line with the trailer. Having a straight shot when backing up to the coupler will make it much easier than trying to zigzag your way into the correct position.

Have your helper stand off to the side and give you signals of which direction to go.

Vehicle and Trailer in Line for Hook Up

Step 3: Raise the Coupler

When your vehicle is about a foot away from the trailer tongue, stop and adjust the trailer coupler height.

Make sure the coupler will clear the trailer ball as you back the vehicle up the rest of the way. If it is raised too much, lower it until it is only a few inches higher than the ball.

Trailer Coupler Raised Above Tow Ball

Step 4: Back up the Rest of the Way

Back your vehicle up the rest of the way to the coupler, going very slowly and using extreme caution. The coupler should line up perfectly with the trailer ball.

It is important that you go slowly during this step and that you rely on your helper to tell you which way the vehicle needs to go. If things are not lining up on the first try, pull forward and try again.

Backing Trailer Ball Up to Coupler

Step 5: Lower the Coupler onto the Ball

With the vehicle in park and the emergency brake engaged, use the trailer jack to lower the coupler until it is resting on the ball. You should also make sure the coupler latch is in the upright, unlocked position before lowering.

If you find that the coupler is offset from the ball, raise the jack again and repeat the previous step.

Lower Trailer Coupler Onto Ball
Towing Tip!

Grease the trailer ball before hooking up to help maintain a smooth connection. With the amount of weight from the coupler constantly pushing down on the ball, a coupler can actually start to wear through if not properly greased.

Step 6: Latch the Coupler

With the coupler fully seated on the ball, engage the latch and secure it with a safety pin or coupler lock.

Next, jack up the trailer tongue slightly to test the connection. If it comes off the ball, it means that the coupler was not properly seated before being latched. Unlatch it and try again. You can try shifting the tongue forward and backward to get it fully seated.

Trailer Coupler Latched and Secured

Step 7: Attach the Safety Chains in a Crisscross Pattern

Safety chains are required by law. They should be attached in a crisscross pattern underneath the coupler to provide a sort of cradle. If the coupler ever becomes disconnected from the ball, the crisscrossed chains are intended to catch the coupler.

Each safety chain should be rated to meet or exceed the gross trailer weight, and they should not touch the ground when attached.

Hooking Up Safety Chains

Step 8: Retract the Jack

When the coupler is secure, fully retract the trailer jack. The trailer jack will need to be up and out of the way for towing.

Some jacks feature a swivel bracket that allows them to swing up parallel with the ground. Others simply have a leg that retracts into the jack post.

Trailer Jack Retracted

Step 9: Plug in the Trailer Wiring

Plug your vehicle wiring harness into this trailer. You can limit the amount of excess wire between the vehicle and trailer by wrapping the harness around the trailer tongue. The harness should not touch the ground, but it should have enough length to make turns without tension.

With an adequate amount of wire length, press the trailer-side plug firmly into the vehicle-side socket.

Plugging in Trailer Wiring

Step 10: Check the Trailer Lights

With your helper standing in view of the trailer lights, turn them on one at a time to make sure they are working. You should check your right turn signal, left turn signal, hazards, running lights and brake lights.

Have your helper call out each lighting function as he or she sees it. If one of your lights is not working, use an electrical tester to make sure there is an active signal at the vehicle-to-trailer wiring connection.

Testing Trailer Lights

How to Hook Up a Trailer Video


Hooking Up a Trailer by Yourself

5 Tips for Hooking Up a Trailer by Yourself

If you do not have a friend to help you, hooking up your trailer may be more difficult. Here are a few tips to make the process easier.

Tip 1: Go slowly

Going slowly is a good tip any time you are hitching up a trailer, whether you have someone helping or not. Take your time and don't be afraid to redo a step if needed.

Tip 2: Manually move the trailer

If your trailer is lightweight enough, push or pull it to the vehicle rather than trying to back the vehicle up to the trailer. Don't strain yourself. If the trailer is too heavy, this trick may not be an option.

Tip 3: Use a backup camera

Use a backup camera to better see the trailer as you back up. If your vehicle is not equipped with a rear camera, use a brightly colored stick or flag attached to the coupler to better see your target. Point the stick straight up so that you can see it through the back window of your vehicle.

Tip 4: Place a marker on your vehicle

Place a piece of tape on the center of your rear window to indicate the location of the trailer ball. If you are using a stick or flag to mark the coupler, line up the tape with the marker.

Tip 5: Open the driver door

With only a foot or two left between your vehicle and the coupler, open your driver-side door and pick a spot on the ground as a reference point. Use the point as you back up to judge the remaining distance. Remember to have your coupler raised above the trailer ball to avoid damage.

Truck Backing Up to Trailer

Pre-Towing Checklist

What to Do Before Towing a Trailer

When you have your coupler hooked up, your connector plugged in and your trailer ready to tow, it is always a good idea to double check your work. Take a moment to go over the following items to help ensure a safe, successful trip.

Download pre-towing checklist

CURT Pre-Towing Checklist - Towing 101 - CURT

Towing 101 Table of Contents