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. Call 800-298-8924 to order Tow Ready custom fit vehicle wiring part number 118487 or order online at etrailer.com. Free expert support on all Tow Ready products. Guaranteed Lowest Price and Fastest Shipping for T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
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Custom Fit Vehicle Wiring > Trailer Hitch Wiring > Powered Converter > 4 Flat > Custom Fit > Tow Ready

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

Tow Ready Custom Fit Vehicle Wiring

(5 reviews)


Code:   118487

Retail:$69.84

Price:$56.95


Custom Fit Product

Shipping Special

Shipping Weight: 1.85 pounds

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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.


Features:

  • 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


Specs:

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


Installation

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



118487 Installation InstructionsInstallation Details 118487 Installation instructions

This Product Fits The Following Vehicles

2010 - 2017 Ford Mustang

2010 - 2010 Ford Mustang All Models

2011 - 2014 Ford Mustang All Models except GT

2015 - 2017 Ford Mustang Convertible models

2015 - 2017 Ford Mustang Fastback models

2012 - 2014 Ford Mustang GT models

2011 - 2011 Ford Mustang GT models - Convertible

2011 - 2011 Ford Mustang GT models - Coupe




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


Videos are provided As a guide only. Refer To manufacturer
installation instructions And specs For complete information.




Video Transcript for Tow Ready Custom Fit Vehicle Wiring 118487 Review

Today we're going to be taking a look at part number 118487. This is the T1 vehicle wiring harness with your four pole flat trailer connector. This product is going to fit certain years and models of the Ford Mustang. It's going to provide your four way flat trailer connector at the back of the vehicle to power your trailer signal lights. The unit is compatible with your five pole, six pole and seven pole adapters. Those adapters if needed are sold separately.

And it's going to come with a dust cap for the four way flat connector. That way you can cover up those connection points when your plug's not being used. The black box right here, this is going to be the included module light. This is a power module that connects directly to the vehicle battery through the wiring, and that's going to avoid overloading the vehicles electrical system. Now, one of the main benefits of a system like this, is that it's designed to connect quickly and easily. All you have to do is locate the connection points in the trunk of the vehicle and plug in your connectors.

You're going to have two sets of connectors. The set with the green wire, that's going to go to the passenger side of the vehicle. Yellow and brown side, is going to go to the driver side of the vehicle. So, you plug in the connectors and then you're going to need to make a ground connection. That's going to be your white wire with the ring terminal attached to it.

You can make that ground with the included self tapping screw that's provided in the kit. You want to get that grounded to a nice clean metal surface. And then you can go ahead and secure your converter box. It's going to be the black box right here. You can secure it with some double sided adhesive tape that's provided.

You could use zip ties, or it's got a little mount hole in it, so if you want to secure that with a screw you can do that as well. So once you get that secured, the next step is going to be to run the hot lead to the vehicle battery. Hot lead is going to be the red wire coming out of the box. This is going to get connected to the bundle of black wire with one of the included butt connectors. The other end of the black wiring is going to go to the vehicle battery. It's going to get another butt connector attached to it, and that's going to attach one half of the fuse holder. The other half of the fuse holder gets the ring terminal attached to it, and that's going to get connected to the positive post on the vehicle battery. It does come with a 10 amp fuse, it goes directly on the fuse holder, and it's got the fuse cap to keep it safe and protected. So, once you have that connected you can go ahead and secure any excess wires that you have with the included zip ties. Now, this kit does come with your detailed installation instructions. These are going to walk you through the installation process step-by-step. And then once your install is complete the four way connectors are going to be stowed within the trunk of the vehicle, when it's not being used. When it comes to the maximum amperage for the stop and turn lights, we're looking at 2.1 amps per circuit. And for the tail lights, we're looking at 5.6 amps per circuit. It's also recommended for that you use a small amount of dielectric grease on all your electrical connections. Like the plugs on the vehicle and the four pole connector itself, and that's going to prevent corrosion. If you need some of that grease, you can find right it here at etrailer.com. It is going to be sold separately. That's going to do it for today's look at part number 118487.


Customer Reviews

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

Average Customer Rating:  5.0 out of 5 stars   (5 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

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

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

by: Randell03/09/2016


Plugged in as advertised and is still working as expected. 240303



- 118487

by: Scott W08/02/2012


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



- 118487

by: Jim S.10/20/2014


Exactly what I needed, with fast delive ry! 156900

5
5


Ask the Experts about this Tow Ready Custom Fit Vehicle Wiring
Do you have a question about this Custom Fit Vehicle Wiring?


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  • 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 Wiring for a 2015 Ford Mustang GT Convertible
  • Technically, the Curt trailer hitch # C11405 will fit a 2015 Ford Mustang GT Convertible but it is only listed for Coupe models so I would not recommend it. Like you said, the Draw-Tite hitch # 24928 fits convertible and regular models and it is the hitch I would use. I have linked a video showing installation for you. If you want to do some towing the correct ball mount is # 3594 and for a 1-7/8 inch ball use # 19256 and for a 2 inch ball use # 19258. And to add a 4-Way trailer connector...
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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. The recommended ball mount is # 3594. For a properly sized ball use # 19256 for a 1-7/8 inch or # 19258 for a 2 inch. And for trailer wiring use harness # 118487. I have linked the hitch and wiring instructions...
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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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  • 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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  • 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, the recommended ball mount is # 3594.For a 1-7/8 inch ball use # 19256 and for a 2 inch use # 19258. For trailer wiring, use # 118487. I have included a link to the instructions for the...
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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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  • Trailer Hitch for 2015 Ford Mustang GT
  • There are indeed hitches available for the 2015 Ford Mustang GT. The best hitch for you will depend on what you're planning on using the hitch for. If you're just needing a hitch to serve as an attachment point for a bike rack or other hitch mounted accessory, I'd recommend the Draw-Tite Class I hitch # 24928. If you'll also be doing some light duty towing, the Hidden Hitch Class I, part # 60366. The Hidden Hitch model includes a draw bar and pin and clip, which you wouldn't need unless...
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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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  • 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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  • 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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  • Tips for Routing Trailer Wiring Harness Power Wire on a 2014 Ford Mustang Convertible
  • There is no one specific way the power wire from a trailer wiring harness such as # C56088 or # 118487 has to be run on your 2014 Ford Mustang. It all depends on how you want to route the wire. I have included a link to a help article with tips on routing the power wire for you. You could follow one of those methods or use it as a guide to develop your own.
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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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  • 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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  • Wiring 4-Way Trailer Connector with 5 Wires
  • Do you have a 4-pin connector that has 5 wires or is it a 5-pin connector? There is a big difference since you normally see a 5-pin connector on a boat trailer with the 5th pin used for an electric reverse lockout solenoid on a brake actuating coupler. If it is a 4-pin connector with 5 wires then it is called a wishbone harness and would have 2 wires attached to the running light pin so you have one wire for each side of the trailer. Typically, on a 4-Way, the white wire is ground, brown...
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  • Recommended Trailer Hitch For 2015 Ford Mustang GT Premium Convertible
  • We have just what you are looking for. The trailer hitch I recommend for your Mustang is the Draw-Tite Sportframe Trailer Hitch, part # 24928. This is a Class l hitch and it has a 1-1/4 inch receiver opening. I called my contact at Draw-Tite and asked about the GT Premium Convertible model to see if there were any issues with a trailer hitch. They told me that the # 24928 is listed as a fit for all models. I have attached a link to an installation video for this hitch on a 2015...
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  • Availability of Trailer Hitches for 2014 Ford Mustang GT
  • We do indeed offer hitches for the 2014 Mustang GT. If you'll be doing some light duty towing, go with the Hidden Hitch Class I hitch, part # 60280. The hitch includes a pin and clip and the manufacturer recommended ball mount. If you'll be towing, you'll also need the following to complete your towing system: Trailer wiring harness w/ 4-pole trailer connector, part # 118487 2 inch hitch ball, part # 19258 1-7/8 inch hitch ball, part # 19256 Locking hitch pin, part # RH2-XL If...
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  • Availability of a Trailer Hitch and Wiring for a 2011 Ford Mustang GT
  • I spoke with my contact at Hidden Hitch and he stated that trailer hitch # 60280, will fit the 2011 Mustang GT. I have included a link to the installation details. If you plan on doing some towing the hitch comes with the proper ball mount. For a 1-7/8 inch ball use # 19256 and for a 2 inch use # 19258. For trailer wiring use # 118487.
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  • Taillight Signal Converter Recommendation for Adapting a US Vehicle to a Euro Trailer Wiring
  • The note you mentioned for the # 118158 is for when it is used for flat towing. Since your plan is to use this adapter to make an adapter for towing a trailer you can disregard that. The # 118158 would be the correct adapter to use to convert your trailer taillight signals from combined to separate and would work with the # 118487. I attached a diagram that should be helpful for you as well.
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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...
    view full answer...

  • Availability of Trailer Hitch for 2015 Ford Mustang GT
  • Draw-Tite, Hidden Hitch and Curt all offer hitches that are compatible with your 2015 Mustang GT. If you'll be using the hitch as a mounting point for a bike rack or other hitch accessory, I'd recommend going with the Draw-Tite # 24928. If you're planning on doing some light duty towing, the Hidden Hitch # 60366 would be a good alternative because it includes the ball mount and pin and clip. You'd also need a 1-7/8 inch trailer ball, # 19256 or a 2 inch ball, part # 19258. You'd also...
    view full answer...

  • Towing a Trailer with 2014 Mustang GT vs 1999 Honda Civic Coupe
  • I did some checking in the the owners manuals for both the 2014 Ford Mustang GT and the 1999 Honda Civic Coupe for you. The owner's manual for the 1999 Civic Coupe instructs that the vehicle is not designed for and should not be used to tow a trailer. I was able to find the 3.7L and 5.0L Mustang have a maximum trailer weight capacity of 1,000 pounds. Per the owner's manual, the Shelby GT should not be used to tow a trailer. The biggest concern in towing with the Mustang will be ground...
    view full answer...

  • Hitch and Related Towing Items for 2015 Ford Mustang GT with Aftermarket Exhaust
  • Auto makers like Ford cannot test their vehicles with all the possible combinations of aftermarket parts available, such as trailer hitches and specialized exhausts. Installation of one of the light-duty Class I hitches offered for the 2015 Ford Mustang Fastback, such as Draw-Tite # 24928, will require that your boyfriend review the linked instructions for this hitch and determine if the exhaust system he's installed will interfere with installation. He'll also want to check his owner's...
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  • Recommended Class I Trailer Hitch for 2015 Ford Mustang
  • I suggest Draw-Tite Class I hitch # 24928 for your 2015 Ford Mustang since it fits both Fastback and convertible versions. It includes all required hardware and installs without drilling. A video and helpful article are linked for you. If you plan to tow you'll need a ball mount # 3594, and either 1-7/8-inch hitch ball # 19256 or 2-inch ball # 19258. For a trailer wiring harness fit for your car use Tow Ready Custom Fit Vehicle Wiring # 118487. Be sure to check your owner's manual before...
    view full answer...

  • 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 Draw-Tite trailer hitch # 24863. The recommended ball mount is # 3594. 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 trailer wiring mentioned...
    view full answer...

  • Which Hitch Fits 2011 GT500 and is Nearly Invisible
  • I recommend going with Hidden Hitch trailer hitch part # 60280. When this hitch is installed on a 2011 Ford Mustang GT500, the rear fascia will conceal everything with the exception of the receiver. I am including a link to the installation instructions of this hitch and it will show a picture of where the hitch will be located on the car in relation to the rear fascia If you plan on doing some towing the hitch comes with the correct ball mount, pin, and clip. For a 1-7/8 inch ball you...
    view full answer...

  • 2012 Mustang Trailer Hitch Availability
  • We do offer several hitches that are confirmed as a fit for your 2012 Ford Mustang GT. I have provided a link for your reference that lists them. Of the options available I recommend the Draw-Tite Class I # 24863. Please keep in mind if you are using this for towing or hitch mounted accessories you need to use Class I compatible products. Please be aware that normally the GT models low slung rear fascia does require trimming, because a hitch needs clearance to be able to carry items...
    view full answer...


Do you have a question about this Custom Fit Vehicle Wiring?






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Information for this part was:

Photos by:
Theodore B
Expert Research:
Michael L
Expert Research:
Michael H
Video by:
Joshua S
Test Fit:
Nicholas E
Video Edited:
Jacob T
Updated by:
Laura H
Installed by:
Cole B
Photos by:
Stacy F

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Info for this part was:


Photos by:
Theodore B

Expert Research:
Michael L

Expert Research:
Michael H

Video by:
Joshua S

Test Fit:
Nicholas E

Video Edited:
Jacob T

Updated by:
Laura H

Installed by:
Cole B

Photos by:
Stacy F

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.







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