1. Custom Fit Vehicle Wiring
  2. Tekonsha
  3. Custom Fit
  4. Trailer Hitch Wiring
  5. 4 Flat
  6. Powered Converter
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

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

Item # 118551
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Our Price: $87.26
Custom Fit Vehicle Wiring

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118551 - 4 Flat Tekonsha Trailer Hitch Wiring
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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 Tekonsha custom fit vehicle wiring part number 118551 or order online at etrailer.com. Free expert support on all Tekonsha 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.
  • All Info
  • Reviews (460)
  • Q & A (237)
  • Videos (5)
  • Photos
  • Used (1)
  • Why etrailer?

Tekonsha Custom Fit Vehicle Wiring - 118551

  • Custom Fit
  • Trailer Hitch Wiring
  • Tekonsha
  • 4 Flat
  • Powered Converter

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 behind tail lights
    • 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: 4.2 amps per circuit
    • Tail lights: 7.5 amps per circuit
  • 1-Year limited warranty


Installation

This custom-fit T-One connector plugs into your vehicle's wiring harness, which is located behind the driver's-side and passenger's-side tail lights. You will have to remove the tail light assemblies to access this harness.


T-One Connection Location Points Behind Tail Lights

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 either within your rear cargo area or beneath your vehicle, near the trailer hitch. A mounting bracket (sold separately) is recommended to keep the connector secure if you are mounting it near the hitch.


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.



118551 Tow Ready T-1 T-Connector - 4 Wire - Modu-Lite

Installation Details 118551 Installation instructions

This Product Fits The Following Vehicles



California residents: click here


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 Tekonsha Custom Fit Vehicle Wiring - Trailer Hitch Wiring - 118551 Review

Speaker 1: Today, we're going to take a look at the T1 vehicle wiring harness with the four-way flat trailer connector. Now, this is a custom-fit part. It is designed to fit 2005 to 2014 Ford Lincoln, Mercury, and Mazda vehicles. It fits many vehicles in those brands, so what I would recommend for you to do is go to our website, use our fit guide, put in your year and model vehicle, and it'll show you if this will work for your application. Now, this provides this four-way flat trailer connector at the back of your vehicle to power your trailer's signal lights. It is compatible with five-pole, six-pole, and seven-pole adapters, that we do sell separately on our website.This harness does connect very quickly and easily.

Basically, you just locate your connection points, which will be behind the tail lights. Plug in these T connectors, one on each side of the vehicle. Ground your white wire, and then your black power wire here will run to your vehicle's battery. This harness includes this black box, which is a modulite. This is to ensure that your vehicle's wiring will match that of your trailer.

It is a power module, so it connects directly to the battery to avoid overloading your vehicle's electrical system. The wire that runs out the back that the four-way's connected to, it's constructed of a 16-gauge bonded wire. If you notice, has this integrated dust cover for your four-way. What's nice about that is when you're not plugged into your trailer, you can put that over the terminals to protect it from the elements or from any damage.A few specs on this harness. The maximum amperage is ...

on the stop and turn light circuits is 4.2 amps per circuit. On the tail lights is 7.5 amps per circuit. This part includes everything laid out here on the table, even has a nice set of detailed instructions that describe how to install it, with pictures of where your connections are to be made. Basically, just to go through this briefly how this connects, what you'll want to do again is go to the back of the vehicle. Locate your connection points, which will be behind the tail lights.

You'll want to start on the passenger side and take this T connector, it has the green wire in it, unplug your harness from the tail lights, plug this in between the harness and the tail lights. Then what you want to do is take the other T connector, that has the yellow wire in it, that's for the driver side. Run that over to the driver side, same way. Plug in this T connector between the harness and the tail lights.Now, your modulite box here, you do want to attach that to a good, flat surface so it doesn't bounce around. They do include a bracket with a hole in it that you could put a screw in. They also include a piece of double-face tape that you can use to hold it into place, but you do want to attach that down. Once that's all attached, you'll take your white wire that has the eyelet on it, that needs to connect to a good clean ground. Then the remaining wire is your black power wire. That'll run to the front of the vehicle, to the battery. To do that, they give you a length of wire and some connectors. You'll take on of your butt connectors, put on the power wire, connect it to one end of this length of wire, run this all the way to the front. When you get to the front, you don't want to connect this directly to the battery. You want to run it through this in-line fuse holder.Take the other butt connector, attach it to one end of the fuse holder, just like that. Your other end of the fuse holder, you'll take this eyelet connector, attach that, and this is what'll connect to the vehicle's battery. Once that's connected, pop open your fuse holder. Take your included 15-amp fuse and go ahead and just install it into your fuse holder. Oops. There you go, just like that. Once you get it all installed, just go ahead and put your cover over that. Once you get that all attached, you'll be all ready to go. Now, they do include some extra cable ties to take up any length in the wiring. They even include this extra grounding screw if you need to make your own ground, if there wasn't one nearby, you can make your own ground with that screw. That should do it for the review on the T1 vehicle wiring harness with the four-way flat trailer connector.


Customer Reviews

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118551

Average Customer Rating:  4.8 out of 5 stars   (460 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.

- 118551
by:

This is a great company. Got my shipment way sooner than expected... 673329



- 118551
by:
Ford Escape

I have had this setup for about a year on my Ford Escape. It was super easy to setup and it is super reliable. I’m usually using a trailer every other week and it has not failed me. 10/10 571054



- 118551
by:
2010 Ford Escape

You will need a hour to install the wiring kit. The kit only includes a very few of the teeniest wire ties that exist on earth. I would expect that the teeny wire ties would break in a short amount of time. In reality, you will need at least 30 heavier and longer wire ties to neatly tie off all sags of the main wire from the engine compartment back to the hitch, then along the hitch itself. Be sure to tie off that square wire junction box in case the double sided tape fails. I stuck mine on the far left side of hitch. The instructions failed to say that all wiring splices should be wrapped with electrical tape or shrink tubing. 140121



- 118551
by:
2007 Lincoln MKX

My installer explained that this wiring package is a bit involved, but after looking at the online tutorial, he certainly should not have any trouble. 435830


Comments
Perfect. No complaints whatsoever!
Tony E - 09/23/2018

43916

- 118551
by:
2010 Ford Van

This is a five star review. This product was exemplary. A couple minor criticism. The batter terminal connector was not shrink. The 4-wire connector could be a bit longer. It was long enough. If you find someone who really likes to wire it to perfection it is just barely long enough. It does clip over the chain area as depicted. I think they made the power wire longer, from the looks of it compared to the videos, but it's still not quite long enough for perfectionist wiring in a bus frame. It probably isn't long enough at all. We used about 4.5 feet more. Finally, the gauge of the power line is not detailed in the product description it is 12 gauge. Do not purchase 16 gauge wire for this application, lol. 406443



- 118551
by:
2009 Mercury Mariner

Very easy to install on my 2009 Mercury Mariner. Everything required was included. The only "difficult" part was running the wire from the rear of the car to the positive terminal of the battery. The wire was plenty long enough and more than enough wire ties were included for the job. I took the rear bumper off which made running the wires between the rear lights and the module much easier. 555063


Comments
It was working fine. We have since sold the car. Now, since I had such great results, I have to buy a hitch and adapter for my new car.
John K - 08/20/2019

60213

- 118551
by:
2010 Ford Escape

I purchased this wiring kit along with a trailer hitch and have to say this wiring kit and instructions were real nice. High quality product that went on easily. Took about an hour to install and test. Worked wonderfully and the cost was real competitive. I would highly recommend this product and eTrailer.com for your trailer hitch needs. Great company to deal with from ordering on line to follow-up after the sale, just a great company to work with. 202262


Comments
Love the hitch and wiring, use it all the time. Just hauled the trailer 159 miles last weekend and everything works well. Very happy.
Van J - 06/18/2016

18833

- 118551
by:

Installation was easy and we will see how long it works. I hope it lasts longer than the Curt kit that I ordered two years ago. 704268



- 118551
by:
2008 Lincoln MKX

Exact fitment of the harness to the lights and the installation was easy. The etrailer.com video was an excellent tool to use as it clarified certain steps in the provided paper instructions......Thanks etrailer.com. The T-one harness is just the opposite wiring set-up of the harness that is used in the video. I was able to use an existing floor body grommet plug to feed the black 12 gauge hot lead wire under the car(I drilled a 9/64th hole in the rubber grommet plug and feed the wire through the drilled hole). Running the hot lead wire to the front of the vehicle took some time (recommend ramps for better clearance). Hook-up of the fuse line and battery connection was elemental. All parts provided make the installation process very easy. The T-one harness is powering the trailer lights perfectly. 553990



- 118551
by:

This wiring harness fit my 2010 Ford Escape (which had no OEM towing package nor wiring) exactly, and although the paper instructions were a bit confusing, the installation video from e-trailer was all I needed to understand how to install it. The only part of the installation that I would NOT recommend is running the long battery wire underneath the vehicle on the outside of the body, as that risks getting damaged. I wanted to run the wire on the interior, so I removed the interior trim on the driver's side and routed the wiring along the OEM vehicle wiring, using cable ties to attach it at several points throughout. The only part I had to get creative with was getting the wire through the body into the engine compartment. For that I found a rigid straw and inserted it through the rubber plug where the main wiring enters the compartment, then ran the wire through the straw. Once the wire was in the engine compartment, I removed the straw and voila! Interior-wired power to the towing harness. Also, I found that it was possible to run the green wire (from the left taillight to the right taillight) along the interior of the vehicle by routing it through the same holes the regular wiring exits the vehicle to the taillight assembly. Overall I am very happy with this product and it is definitely worth the investment to get proper trailer wiring. 693534



- 118551
by:
2011 Ford Van

I salvaged a hitch off of a vehicle of mine but noticed that the vehicle wiring has changed quite a bit so buying this kit was the most logical way to proceed. The two things that I appreciate the most are that the kit is complete, I didn't have to go buy more parts to do the installation, and etrailer provided a video showing the path that their installer chose for running the hot wire from the back of the van to the front power source. This is important because there is only 20' of wire for a 16' long vehicle and I didn't want to have to go buy more wire. Ultimately, I will add a 7 pole female adapter and trailer brakes and etrailer has a 7 pole adapter that will make that easy. 575158



- 118551
by:
2011 Ford Escape

I am new to car mod-ing and are very inexperienced when it comes to knowing exactly what product to get. This is where etrailer was pretty helpful. The videos are very helpful. The hitch was made to fit my specific vehicle (2011 Ford Escape). I also purchased the specific wiring the site said I needed due to having backup sensors on my vehicle. However, after successfully installing the hitch, we realized there was a problem with the wiring. The yellow/black wires are meant for the driver's side taillights while the green is meant for the passenger. I'm not sure if I was sent the wrong product or if there was a manufacturing error, but the lengths of wire for each were switched. The shorter length wires should have been the yellow and black while the long should have been green - instead, they were the opposite, as you can see in the pictures. The black box on the right is meant to be housed in the driver side light assembly, not the passenger. Because of this, I was forced to find a long white wire, fuse it with the ground wire that was supplied, and run it back across the width of my vehicle to the factory ground. While it seems like this won't be an issue, it was very annoying having to alleviate this problem. Everything else seemed to be correct with the wiring and included items, but I would recommend that everyone inspect your order and watch all videos to make sure your product looks to be correct before attempting to install it. 420128



- 118551
by:
2008 Ford Escape

I was a bit hesitant when it came to ordering the special harness for the Escape equipped with backup sensors (3x the price of the basic one & 3x the work to install), but it was pretty much confirmed: the non-towing equipped harness isn't designed to handle the extra load of trailer lights - so this kit gets it power from a beefy lead connected directly to the battery. I have to say that crawling under the car, running this power lead from the d/s taillight to the battery was the biggest pain of the whole job - including installing the receiver, but I didn't have a choice. etrailer's how-to video proved to be invaluable and a time-saver. Seeing the actual installation on my specific vehicle was huge. I used the video as the manual and read the manufacturers directions as backup. Kudos to etrailer for putting together these videos and learning about the products that they sell. Kind of like the Crutchfield of trailers, only better. On another note, I inquired about shipping time and received a prompt email reply with a note about etrailer making sure that my receiver and harness would be shipped a.s.a.p. - which it was. 93210


Comments
I really cant provide a one year later review - not because I sold the vehicle, but because it is now my daughters car and she never uses the vehicle to tow. She only uses the receiver for a Yakima bike rack. I believe that the finish on the receiver has held up well as the car has endured harsh elements here in the DC area they like their salt - especially this winter. Id be happy to take a look at the finish of the hitch in the Spring if you remind me to do so.
JPTL - 02/04/2015

9274

- 118551
by:
2012 Ford Escape

Right turn signal isn't coming out of the black box of the trailer wire harness. The signal is reaching the black box. Appears the black box is the problem. This happened after approx. 9 months from installation. Used the vehicle to tow a trailer around 30 trips. Not happy about that. Installation was easy and the directions were helpful. Overall I would be extremely satisfied if I didn't have the turn signal issue. 523093


Comments
Given what youve described, it sounds as if the converter box has shorted out. This is typically caused by a short circuit somewhere in the right turn indicator/brake lamp circuit on the trailer. Before replacing the taillight converter, youll want to closely examine the right turn/brake lamp circuit on your trailer. Begin at the trailer connector, and trace that circuit rearward back to the lamp. Look for loose connections, pinched wires or worn or cracked wire insulation that would allow the wire to short out on the trailer frame. If the short isnt located and repaired, youll continue shorting out converter boxes. Ive linked to some help articles that will help you troubleshoot the problem.
-- Mike L - 06/18/2018

39890

- 118551
by:

As was advertised, everything is included. Only took about an hour to install, most of that running the power wire to the battery under the vehicle. The kit works like a charm. No need to different flasher units, etc. The lights on my trailer are working great. Every time I've ordered from etrailer.com the service has been quick and accurate. I want to thank them so much for the videos they provide for mounting about everything they sell. 801272



- 118551
by:

The hitch and wiring harness work great. Installation was straightforward and I’ve had no issues. 799300



- 118551
by:

I learned about this product from watching your online video. Wanting to minimize splicing into the factory wiring on my vehicle, this was just what I needed. Just like in the video, it was easy to install. Thanks so much. 796555



- 118551
by:

Good product, excellent quality and customer service, totally recommend it 794619



- 118551
by:
Ford Escape

The wiring kit for my Escape has worked flawlessly. The customer service from Karen at etrailer has been a delight. Thank you very much! 793499



- 118551
by:

I’ve had the harness for about a year now and I am very pleased with the results. No more trying to figure out my wiring on my vehicle because the wiring harness fixed the problem for me. Thanks “etrailer” for a great product. Charles 792344



- 118551
by:

Already have it hooked up and it looks great but havnt used it yet. But I'm sure it will do fantastic. 783464



- 118551
by:

The product had clear and concise directions allowing me to install the product in a timely manner. It worked as expected and would recommend for anyone DIY’ing. 779663



- 118551
by:

Easy,simple installation. Works wonderful. Thanks 776417



- 118551
by:

High quality and easy install. 773508



- 118551
by:

Instructions were a little backwards but easy to figure out. Works perfectly 773444


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Ask the Experts about this Tekonsha Custom Fit Vehicle Wiring

  • Installing 7-Way Trailer Connector on 2014 Ford E-350 Van
    The connectors you have found are not confirmed to be for the trailer wiring and we don't have any wiring harness that is a fit for what you described. Because you don't have the factory trailer wiring, I recommend starting with the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118551 which will connect to your factory wiring behind each tail light. Then you will use kit # ETBC7 to give you the wire, connectors, adapter, and circuit breakers needed. Then you can...
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  • How to Determine If a 2010 Ford Escape Has the Factory Tow Package
    The easiest way to determine if your 2010 Ford Escape has the factory tow package would be to contact the dealer with your VIN as they would be able to tell you exactly whether or not your vehicle has the factory tow package. Another option for you would be to look for a black square connector which if present will be located underneath the drivers side of the vehicle near the spare tire. I recommend using the Tekonsha Trailer Wiring Harness part # 118551 for vehicles without the factory...
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  • How To Install T-One Vehicle Wiring Harness 118551 On 2010 Ford Escape
    The T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector part # 118551 which is a fit for a 2010 Ford Escape does not have an actual wiring diagram per se as it's a plug-in-play harness. I have attached the actual installation instructions for you below which you will use for the installation process. The pigtails on the harness will plug-in behind the tail lights and then you'll need to mount the converter box, ground it, and run a power wire to the battery. If you take a...
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  • Does the Power Wire from a Tow Ready Wiring Harness Need to be Ran to the Vehicle Battery
    You absolutely need to run the power wire of the T-One Vehicle Wiring Harness # 118551 to the battery of your 2008 Ford Escape. The voltage on a D battery is no where near what would be needed and would not work. If you are concerned about routing the power wire to the front of your car check out the FAQ article I attached that explains how to route the power wire up to the battery.
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  • Parts Recommendation to Install a 7-Way on a 2008 Ford Escape
    To install a 7-way on your 2008 Ford Escape you will first need to start with a 4-way. For that you would want the Tow Ready Wiring Harness part # 118551. Check out the install video I attached. Now if the trailer you plan on towing doesn't have trailer brakes all you would need is the adapter part # 37185. If the trailer does have brakes you would want the # ETBC7 instead of the # 37185. This comes with everything needed to install a 7-way and install a brake controller. I attached...
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  • Trailer Wiring Harness for a 2009 Ford E350 Van
    Yes, trailer wiring harness # 118551 is a fit for your 2009 Ford E350 van. I have linked a video showing installation on a 2008 E350 which will be the same as the installation for your 2009.
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  • Parts Needed to Install a Brake Controller in a 2014 Ford E-350 and a 2004 Chevy Silverado 2500
    The good news is that the installation of the needed wiring is fairly similar between both your 2014 Ford E-350 and your 2004 Chevy Silverado 2500. Starting off you will need to install a 4-way on your E-350. I recommend going with the T-One # 118551 as we have found Tekonsha to be the most reliable and this kit includes wiring that runs up to the battery so that your trailer doesn't pull power from the light circuits on your E-350. You may need additional wire # 12-1-1 and some butt...
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  • Recommended Trailer Wiring Harness for 2007 Ford Edge
    The Tekonsha T-One Wiring Harness # 118551 is what you need on your 2007 Ford Edge. I've included the installation video for you to take a look at.
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  • What is the Correct Trailer Wiring Harness for a 2009 Ford Escape with Backup Sensors
    The T-One Vehicle Wiring Harness, # 118551, is the correct harness to use if your 2009 Ford Escape has the backup sensors. The reason it works and the other harness does not is because this bypasses the tow package wiring and thus will not interfere with the backup sensor wiring. In order to mount a 7-Way trailer connector on the CURT trailer hitch # 13650, what I recommend is the 4 and 7 Way Installation Kit, # ETBC7, and then add the No-drill Mount Bracket, # C57202. You would not...
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  • Trailer Wiring Harness for a 2013 Ford Econoline Van with Backup Camera and Sensors
    The trailer wiring harnesses available for your 2013 Ford E-Series Van, including # 118551, plug in line with the vehicle tail lights and this particular harness gets its power from the vehicle battery so it would not affect the backup camera or sensors. I have linked a video showing an example installation of this wiring harness for you.
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  • Installing a Brake Controller on a 2011 Ford E-350 Without Tow Package
    If you don't have a tow package or a connector at the rear of your 2011 Ford E-350 then you will need to start off by installing a 4-Way. I recommend the Tekonsha T-One # 118551 which gives you basic trailer light functions and draws power directly from your battery. Depending on how you route the power wire to the battery you may need some additional wire with part # 12-1-1 and connectors with part # 05732-2. Once you have a 4-Way installed (or if you already have a 4-Way installed)...
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  • Recommended Trailer Wiring Harness for Ford E350 Van with 4-Pole Connector
    The 4-way trailer connector wiring harness I recommend for your 2008 Ford Econoline E-350 Van is the part you reference, part # 118551. This custom wiring harness adds a 4-way flat trailer connector at the back of your Ford Van to power your trailer's signal lights. The T-One connector plugs directly into your existing wiring. Some installations of wiring part # 118551 may require additional wiring depending on how you route the power lead. I have included a video showing the wiring...
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  • Why Does Trailer Wiring for a 2011 Ford E-350 Van Require a Converter and Power Wire
    Vehicle tail light wiring has changed quite a bit over the past few years. There are basically 2 wire systems and 3 wire systems. A 2 wire system has combined brake lights and turn signals. A 3 wire system has separate turn signals and brake lights. Three wire systems require a converter to change the signal over to a 2 wire system which is what a trailer uses. Also, on some vehicles it has been determined that the electrical system cannot or should not handle the load from its own...
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  • Troubleshooting Tekonsha T-One Harness Causing Issues with Lights on 2012 Ford Escape
    The correct Tekonsha T-One Harness for your 2012 Ford Escape without the factory tow package is the part # 118551. If this is what you have installed then there are a couple of things you will want to look at. Please just let me know if I'm wrong but it sounds like it's the lights on your Escape that aren't working properly with the harness installed and not the trailer lights. The first thing I recommend checking is the hot lead that should be run up to the Escape's battery via the...
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  • Trailer Wiring Harness for a 2008 Mazda Tribute without Factory Tow Package
    If your 2008 Mazda Tribute did not come with the factory tow package then adding the relays would not activate the # 118251 wiring harness. You would need to replace it with # 118551. The ways each of these install is fundamentally different so there isn't a way to transform a 118251 into a 118551. The 118551 harness plugs in line with the vehicle tail lights. I have linked a video showing how it installs.
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  • Could Separate Battery Power Trailer Wiring Harness that Needs Power Wire Ran to Battery
    The problem is that the T-One Vehicle Wiring Harness # 118551 requires 12 volt and cannot work on 24 volts. So unless you have 12 volt batteries that you can keep topped off in the rear of your vehicle you will need to run the power wire up to the vehicle's battery. I attached an install video for this kit plus a help article on routing the power wire of a kit like this.
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  • How Much Power Does a Converter Box Draw on a Powered Wiring Harness
    The Tow Ready T-One Vehicle Wiring Harness, # 118551, for your 2012 Ford Escape is designed to draw as much power as needed to operate the trailer lights up to 15 amps or 7.5 amps for tail lights and 7.5 amps for stop and turn lights. The powered converter allows you to tow trailers with more lighting and draws power directly from the vehicle battery when using the trailer lights. The amperage drawn by this converter depends on the amount and type of lights that you have on your trailer....
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  • Trailer Wiring Harness Recommendation for a 2006 Mercury Mariner
    I have a solution for you, but the Valley Wiring harness part 30130 has been discontinued. For a very similar wiring harness confirmed to fit your 2006 Mercury Mariner I would recommend the Tow Ready Harness part # 118551. This harness is available and would work well. I attached an install video for you to check out as well.
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  • Trailer Wiring Harness for a 2014 Ford E-250 Econoline Van
    For a 2014 Ford E-250 van that does not have the factory tow package or trailer wiring connector, you will need # 118551. It plugs in line with the vehicle tail light wiring. I have included a link to a video to the right showing how the harness installs.
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  • Trailer Wiring Harness for 2008 Ford Escape
    The plugs on the # 118457 and the # 118551 are identical, so technically the 118457 would work on the 2008 Escape, but there's a good reason why the Engineering folks at Tow Ready specifiy that only the # 118551 should be used on the 2008 Ford Escape. In the opinion of the engineers, the wiring system of the Escape didn't have the capacity to feed the vehicle lamps AND the lights used on a trailer. If a powered converter like the 118551 is used, the power to actually illuminate the...
    view full answer...
  • Instructions for Installing T-One Vehicle Wiring Harness # 118551 on 2007 Ford Edge
    Yes, the install of the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector, # 118551, on a 2007 Ford Edge will be the same as the 2008 model. I have attached our installation video as well as the written instructions for you. As for the install videos, our local customers that come in for installations allow us to record the process. We haven't had the opportunity to install a 4-Pole wiring harness on the 2007 model and therefore we do not have a video available.
    view full answer...


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Notes: May have damaged packaging or minor cosmetic blemishes.

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Info for this part was:

Test Fit:
Joe V
Test Fit:
Patrick B
Test Fit:
Nicholas E
Test Fit:
Shane T
Test Fit:
Brent H
Test Fit:
Robert C
Expert Research:
Jackie C
Expert Research:
Mike L
Expert Research:
Robert G
Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
John H
Expert Research:
Brandon M
Expert Research:
Adam R
Expert Research:
Victoria B
Video Edited:
Zack K
Video Edited:
Joshua S
Video Edited:
Jacob T
Video Edited:
Dustin K
Video Edited:
Sue W
Video Edited:
Chris R
Video by:
Andrew K
Video by:
Alan C
Video by:
Zach D
Video by:
Jonathan Y
Installed by:
Jeff D
Updated by:
Laura H
Updated by:
Sarah W
Updated by:
Alexander C
Updated by:
Isabelle B

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