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Custom Fit Trailer Wiring

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

Tow Ready Custom Fit Vehicle Wiring

ratingratingratingratingrating (3 reviews)

Code:   118487



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Shipping Weight: 2 pounds


Tow Ready Custom Fit Vehicle Wiring - 118487

Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into existing wiring. Powered ModuLite reduces strain on wiring system.


  • Provides a 4-way flat trailer connector at the back of your vehicle to power your trailer's signal lights
    • Compatible with 5-pole, 6-pole and 7-pole adapters (sold separately)
  • Connects quickly and easily
    • Locate connection points in trunk
    • Plug in T-connector
    • Run hot lead to car battery
  • Includes ModuLite power module that connects directly to battery to avoid overloading vehicle's electrical system
  • Constructed of 16-gauge bonded wire
  • Comes with dust cap for 4-way flat connector


  • Maximum amperage:
    • Stop/turn lights: 2.1 amps per circuit
    • Tail lights: 5.6 amps per circuit
  • 1-Year limited warranty


This custom-fit T-One connector plugs into your vehicle's wiring harness, which is located inside your trunk, behind the tail lights on both the driver's side and passenger's side. You will need to remove some interior trim or carpeting to access the harness. Once you've plugged in the T-connector, run the hot lead up to your car battery. Connect the lead to the included fuse holder, and then connect the fuse holder to the positive terminal on your battery and insert the provided fuse.

Once installation is complete, the 4-way flat connector will be stowed within your trunk.

It is recommended that you use a small amount of grease on all electrical connections - the plugs on your automobile and the 4-pole connector itself - to help prevent corrosion.

ModuLite Power Module

A ModuLite power module is built into this T-One connector. With a ModuLite, your trailer's lights will be powered without overloading your vehicle's electrical system. Because the module draws power directly from your car's battery and bypasses the electrical routes that are used by a basic wiring harness, there is virtually no draw on your tail light circuits.

118487 Tow Ready T-1 T-Connector - 4 Wire - Modu-Lite

This Product Fits The Following Vehicles

2010 - 2015 Ford Mustang

2010 - 2010 Ford Mustang All Models

2011 - 2014 Ford Mustang All Models except GT

2012 - 2014 Ford Mustang GT models

2011 - 2011 Ford Mustang GT models - Convertible

2011 - 2011 Ford Mustang GT models - Coupe

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Customer Reviews

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118487

Average Customer Rating:  ratingratingratingratingrating5.0 out of 5 stars   (3 Customer Reviews)

Quickly and easily install a 4-way trailer connector on your vehicle with this custom wiring harness. T-One connector plugs directly into existing wiring. Powered ModuLite reduces strain on wiring system.

- 118487

ratingratingratingratingrating by: Donald L12/08/2013

I got the trailer hitch earlier than expected, all the parts were there , the photos to aid in the installation were very helpful and the price was very reasonable. Also the hitch when not in use is very low profile and not easily seen. Thanks E-Trailers! 109544

- 118487

ratingratingratingratingrating by: Tim K06/02/2014

The Sportframe hitch was quick to bolt up with the excellent fish wires. It actually took longer to install the wiring harness! 133662

- 118487

ratingratingratingratingrating by: Scott W08/02/2012

Everything arrived as stated, no problems, very happy. 50268


Ask the Experts about this Tow Ready Custom Fit Vehicle Wiring
Expert Answers about T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118487Do you have a question about this Custom Fit Vehicle Wiring?

  • No-Drill Trailer Hitch for a 2012 Ford Mustang 6 Cylinder Coupe
  • The Draw-Tite trailer hitch, # 24863, will fit your 2012 Ford Mustang, 6 cylinder coupe. There is no drilling involved and you should not have to cut or trim anything to install the hitch on your Mustang. I have included a link to the installation instructions for you. If you will be doing some towing, it would be better to go with Hidden Hitch trailer hitch # 60280 because it comes with the correct ball mount, hitch pin, and clip. For a 1-7/8 inch ball use # 19256 and for a 2 inch use...
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  • Will Draw-Tite Class I 1-1/4 Inch Hitch # 24863 Fit A 2011 Ford Mustang Convertible
  • I spoke with my contact at Draw-Tite and they said that the Draw-Tite Class I 1-1/4 Inch Hitch, part # 24863, will fit a 2011 Ford Mustang convertible. This hitch has a gross towing weight capacity of 2,000 lbs. and a tongue weight capacity of 200 lbs. Some items you may need to complete your Class I towing setup are the Draw-Tite Ball Mount, part # 3594, the Tow Ready 2 Inch Hitch Ball, part # 19258, and the Tow Ready T-One Wiring Harness, part # 118487. I am including a link to the...
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  • Recommend Trailer Hitch for 2010 Ford Mustang V6 with Boss Rear Bumper
  • For your 2010 Mustang V6, you will need the Draw-Tite Trailer Hitch, part # 24840. The hitch will bolt up to the frame of your Mustang, but since you have a Boss rear bumper, additional trimming of the bumper fascia may be required. The Draw-Tite Hitch # 24840 is a Class I 1-1/4 inch hitch. You will want to make sure not to exceed the towing and tongue weight capacity of the hitch or vehicle as stated in the vehicle owners manual. If you will be using the hitch for hitch mounted accessories...
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  • Will the Hidden Hitch Class I Trailer Hitch Fit on a 2012 Ford Mustang Boss 302
  • I spoke with my contact at Hidden Hitch and the Hidden Hitch Class I Trailer Hitch, # 60280, will fit on your 2012 Ford Mustang Boss 302. If you are looking to add a trailer hitch to your vehicle to carry a bike rack, then you may want to take a look at the Swagman XTC-2 Platform Bike Rack, # S64670. This is our most popular bike rack which allows you to easily mount two bikes and will leave plenty of room for you to access your trunk. This trailer hitch includes a draw bar and pin...
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  • Ford Mustang 2010 Convertible Tow Ready T-One Connector
  • The Tow Ready T-1 Connector # 118487 requires a connection to the battery in order to function properly. The T-1 receives the signals from its attachment behind the tail lights, but the voltage to power the trailer lighting is sourced directly from the battery. This is done to protect the circuitry in the vehicle wiring system. Drawing the power from a different 12-volt source can damage the electrical system in the event of a short circuit in the trailer wiring. I have ran the power...
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  • What is the Difference Between the Hidden Hitch and Draw-Tite Trailer Hitch for a 2011 Mustang GT
  • The only difference between the Draw-Tite Sportframe Class I Trailer Hitch, # 24863, and the Hidden Hitch Class I Trailer Hitch, # 60280, is that the Hidden Hitch Trailer Hitch includes a ball mount. Draw-Tite and Hidden Hitch are sister companies that use the same design, specifications and materials for their products. The only advantage to purchasing one over the other is that you will get a ball mount with the Hidden Hitch trailer hitch. In this case you will save some money by...
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  • Trailer Hitch and Trailer Wiring Recommendation for a 2011 Ford Mustang V6 Convertible
  • For your 2011 Ford Mustang Convertible, you can use Curt Trailer Hitch, # C11048. This trailer hitch comes with the required ball mount and you can use ball # 19256 (1-7/8 inch diameter) or # 19258 (2 inch diameter). If you plan on ever using the hitch for a non-trailer load like with a bike rack or cargo carrier, Curts warranty requirements state that for their class I and II hitches, you must use a stabilizing strap like # 18050. For trailer wiring, you will need to use the Tow Ready...
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  • Hitch Recommendation for a 2011 Mustang GT Convertible Calif Special
  • For your 2011 Ford Mustang GT Convertible California Special I would recommend you get a Hidden Hitch, part # 60280. This hitch is designed to work on all models of Mustangs including your Convertible California Special. The problem is in the rear fascia and exhaust, the California Special model uses a different rear fascia and exhaust that is not compatible with the Curt Hitch, part # C11061. I attached installation instructions for you to check out also. You may need the following...
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  • Recommendation for Carrying Two Motorcycles with a 2010 Ford Mustang
  • In order to carry the 2 motorcycles with a 2010 Ford Mustang, the best option would be to use a trailer. The Yakima Rack and Roll Trailer, # Y08106, and the Magenta Sports Trailer, # RRT80, are roof racks on wheels and would not work for your application. First, if you do not already have a trailer hitch for the Mustang, I recommend the Curt Hitch, # C11048. It will fit all models, including the GT, but not a GT/CS, Shelby GT, or GT500. This hitch comes with the recommended ball mount...
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  • Trailer Hitch, Ball Mount, Ball, and Wiring for a 2013 Ford Mustang Towing a Small Trailer
  • For a compatible trailer hitch for your 2013 Ford Mustang I recommend Hidden Hitch trailer hitch # 60280. It comes with the proper ball mount, hitch pin, and clip. For a 1-7/8 inch ball use # 19256. If you ever need a 2 inch ball use # 19258. For trailer wiring you can use # 118487. Motorcycle trailers typically are designed with separate brake and turn signal lights. But since your trailer uses a 4-Way connector you will not need to add any type of converter for it to work with the...
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  • Will Draw-Tite Trailer Hitch 24863 Fit a 2012 Ford Mustang Boss 302
  • It sounds like you race your 2012 Mustang. Are you sure you want to add the additional 25 pounds? I know it isn't much weight but it could be the difference between a win and a loss! This question has come up before and Draw-Tite hitch # 24863 will fit the 2012 Ford Mustang Boss 302. However, you may want to consider using the Hidden Hitch brand trailer hitch # 60280. It will also fit. The only difference is that it comes with a ball mount, hitch pin, and clip. For a properly sized...
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  • Problem With Using Hitch on 2011 Ford Mustang Due to Its Unibody Contruction
  • As long as the # 24863 Draw-Tite Class I hitch you referred to is properly installed and its 2000 lb towing capacity and 200 lb tongue weight capacity is not exceeded, the fact that your Mustang has a unibody won't cause any issues. I'm not aware of any jurisdiction or locality that would have a problem with you installing a hitch on that vehicle. The Draw-Tite hitch would be an excellent choice as an attachment point for a cargo carrier like the Pro Series # 6500 or for a two bike rack...
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  • Hitch Recommendation for a 2011 Mustang GT with an April 2010 Build Date
  • To avoid all of those fit issues that the early 2011 Ford Mustangs had I would recommend you use a Draw-Tite Trailer Hitch for the Ford Mustang, 2011, part # 24863. There have not been any fit issues with this hitch like some of the Curt hitches have had. There have been instances where there have been slight fascia deformation when used with this hitch, but when I spoke with my contact at Draw-Tite he informed me that this is most likely seen on the California-Special Mustangs You...
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Info for this part was:

Photos by:
Theodore B

Expert Research:
Michael L

Expert Research:
Michael H

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