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

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

Item # 118381

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Custom Fit Vehicle Wiring

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Custom Fit Vehicle Wiring 118381 - 4 Flat - Tekonsha
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Product Images

Customer Photos


  • Custom Fit
  • Trailer Hitch Wiring
  • Tekonsha
  • 4 Flat
  • No Converter
Quickly and easily install a 4-way trailer connector on your vehicle using this custom wiring harness. T-One connector plugs directly into existing factory 7-way - no cutting, splicing or tapping required. Call 800-298-8924 to order Tekonsha custom fit vehicle wiring part number 118381 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 (80)
  • Q & A (108)
  • Videos (2)
  • Photos
  • Why etrailer?

Tekonsha Custom Fit Vehicle Wiring - 118381

Quickly and easily install a 4-way trailer connector on your vehicle using this custom wiring harness. T-One connector plugs directly into existing factory 7-way - no cutting, splicing or tapping required.


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 to your existing 7-way - no cutting or splicing of wires
    • Locate connection points behind rear bumper
    • Plug in T-connector
  • Constructed of 16-gauge bonded wire
  • Comes with dust cap for 4-way flat connector


Specs:

  • Maximum amperage: 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 rear bumper, on the driver's side.


Once installation is complete, the 4-way flat connector will be stowed beneath your vehicle, near the trailer hitch. A mounting bracket (sold separately) is recommended to keep the connector secure.


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.



118381 Tow Ready T-1 T-Connector - 4 Wire



118381 Installation InstructionsInstallation Details 118381 Installation instructions

This Product Fits The Following Vehicles

2002 - 2002 Dodge Ram Pickup 1500 with factory 7-Way

2002 - 2009 Dodge Ram Pickup 2500 and 3500 Pickup with factory 7-Way

2001 - 2003 Dodge Van Full Size with Factory Step Bumper

2001 - 2003 Dodge Van Full Size with Standard Bumper

2000 - 2008 Dodge Ram Pickup Pickup with factory 7-Way

2007 - 2008 Chrysler Aspen with factory 7-Way

2006 - 2010 Jeep Commander with factory 7-Way

2000 - 2009 Dodge Dakota with factory 7-Way

2000 - 2007 Dodge Durango with factory 7-Way

2005 - 2008 Jeep Liberty with factory 7-Way

2004 - 2008 Chrysler Pacifica with factory 7-Way

2006 - 2009 Mitsubishi Raider with factory 7-Way

2003 - 2009 Dodge Sprinter with factory 7-Way

2003 - 2009 Freightliner Sprinter with factory 7-Way

2001 - 2003 Dodge Van with factory 7-Way

2008 - 2008 Dodge Durango with factory Tow Package

2000 - 2010 Jeep Grand Cherokee with factory Tow Package



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 - 118381 Review

Today, we're reviewing Part Number 118381 from Tow Ready. This is a T-One vehicle wiring harness with a four-pole flat connector and this is an easy way to add a four-pole flat to your existing seven-way. These plugs T-in into your existing seven-way. Its recommended that you use a mounting bracket which is sold separately, so that the new four-way doesnt drag.Heres the four-way plug and it does come with a dust cover. Its also recommended that you use grease on the two plugs that T-in to your connector as well as on the four-way itself. This will fit your full-sized Dodge van, Dodge Durango, Dodge Dakota, full-sized Ram Truck or Jeep Grand Cherokee; all of these with a factory seven-way.

Youll want to check the Etrailer Fifth Guide for the model years that this harness will fit. This comes with a one year limited warranty and there youll have it for Part Number 118381, the T-One Vehicle Wiring Harness with a Four-Pole Flat Trailer Connector.


Customer Reviews

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118381

Average Customer Rating:  4.5 out of 5 stars   (80 Customer Reviews)

Quickly and easily install a 4-way trailer connector on your vehicle using this custom wiring harness. T-One connector plugs directly into existing factory 7-way - no cutting, splicing or tapping required.

- 118381
by:
2007 Dodge Dakota

didn't even install it .... my Dakota had no hook up ... had to hardwire a connector .... waste of $15 , not even worth my time returning it .... I did buy a hitch that I am using though ... should have bought a chevy 358321



- 118381
by:

Customer service rep helped me with the right harness. It arrived on time. Worked like a charm. Sure beats running around town trying to buy it from a store whose sales reps that have absolutely no idea of what you're talking about, much less of what they're selling (tried that first, unsuccessfully). Thanks for the help. 39264



- 118381
by:
2006 Mercedes-Benz Sprinter

Bought this for a 2006 Dodge Sprinter didn't realize it would not work on a Sprinter with out towing package. Had to buy different kit and splice the wires in (not fun) make sure you have the right kit if you are working on a Sprinter. On a vehicle with the right harness it works great just plug in and go. 155566



- 118381
by:
2005 Jeep Liberty

The product was everything that was advertised it arrived in perfect condition I guess I just misunderstood what I needed and inevitably ordered the wrong part my 05 Jeep Liberty did not come with a 7-way so I need a different harness to be able to hook up my trailer should have called customer service first 566851


Comments

If your Liberty didnt have the factory 7-way, I would recommend the # 118524
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
$58.66
Tekonsha powered taillight converter.

-- Mike L - 09/20/2018

43811

- 118381
by:
2003 Dodge Durango

Product did not fit my 2003 Durango. 557739


Comments

The Tekonsha # 118381 you purchased is only compatible with Durango models that are equipped with the factory tow package. This item is intended to plug inline at the connection between the factory 7-way trailer connector and the vehicles factory tow package wiring harness located directly behind the 7-way trailer connector. If your Durango doesnt have the factory 7-way trailer connector, youll need part # 118334
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
$33.28
which will plug inline at the connection between the Durangos taillight assemblies and the taillight wiring harnesses as shown in the video Ill link for you.

-- Mike L - 08/25/2018

42812

- 118381
by:
2005 Jeep Grand Cherokee

curt hitch i pefer to use because never have any problems always easy to install and get help when i need it however i ordered the wrong trailer harness for the jeep 2005 grand cherokee it does not have factory installed tow package can i exchange it please let me know what i have to do thank you henry m 418696


Comments

Henry, you can simply call us at 1-800-298-8924. We would love to help. For an explanation of our return policy, please see this helpful link:

-- Laura E - 08/19/2017

27383

- 118381
by:

Easy to install, hidden when not in use, doesn't reduce ground clearance and trouble free. Local hitch installer quoted me $350 and said it would take 3" off my clearance. I saved over $200 and got a better setup. 711725



- 118381
by:

Works great. Fit good and easy to insta ll. 705622



- 118381
by:
2003 Jeep Grand Cherokee

Very happy with my order. The hitch went on with no issues, and is in use. I can't believe how quickly it got here! 694299



- 118381
by:

i am extreemly pleaseed with the service ordered sunday afternoon and received order on tuesday great thank you not installed yet 662840



- 118381
by:

This product was what was recommended by your site as the proper wiring harness and it IS NOT compatible with my vehicle. Our family’s vacation has already been pushed back by 2 days dealing with this situation and we are still working on finding a local solution! 647448


Comments

This wiring harness is only compatible if your Freightliner Sprinter has the factory equipped 7-way trailer connector, as we state in our product fit guide. If your Sprinter does NOT have the factory 7-way, youd need part # 118650
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
$55.90
instead.

-- Mike L - 05/29/2019

55831

- 118381
by:
2002 Jeep Grand Cherokee

Fit just like advertised. They have excellent customer service. Videos and pictures were a great help. 643956



- 118381
by:

Super easy installation, 30 mins (including tool take out and put away). Exact fit, with ALL necessary parts. etrailer has exceptional customer service and offers exact fit parts at great prices! 633723



- 118381
by:

fits great 629757



- 118381
by:

This product made it so simple!! Worth every dollar!!! 623234



- 118381
by:

Plu-N-Play Easy-Peasy That's all I can say, It's that easy. Works perfect 616605



- 118381
by:

Wrong wiring packet. Probably my fault. Other than that it was excellent 604355



- 118381
by:
2004 Dodge Dakota

Was shipped same day, will save me time wiring for trailer pigtail just plut it into truck wiring. 596309



- 118381
by:
2008 Jeep Liberty

Product dose not fit 2008 jeep liberty like website states. 579651


Comments

This wiring harness will only work on vehicles that are equipped with the factory 7-way. If your Liberty does not have the factory 7-way, use part # 118554
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
$52.55
.

-- Mike L - 11/05/2018

45415

- 118381
by:
2006 Jeep Grand Cherokee

I ordered the wrong harness so I have no review to offer as to performance or install. But it looks well made and connectors appear quality. 577704



- 118381
by:

This plug and play harness was easy to install and works like it should. I recommend this product. 574506



- 118381
by:
2001 Dodge Van

You were awesome. The part is perfect. Thanks so much for your help. 553519



- 118381
by:

Product was good quality shipping was timely and prices were fair 551424



- 118381
by:
2009 Jeep Grand Cherokee

Just as pictured and received earlier than expected 525774



- 118381
by:

Perfect fit, quality materials. But the customer service and follow through is very good. Thx 503396



- 118381
by:

Liked your product very much, super easy to install. However didn't like the truck it went into so much and got rid of it. ;) 501135



- 118381
by:
2004 Dodge Ram Pickup

Beautifuly made harness unfortunately the truck I was getting it for doesn’t have factory 7 wire plug. I’ll have to wire in manually 491261



- 118381
by:

Super fast shipping and excellent price! 483843



- 118381
by:
2000 Dodge Dakota

It took but a few minutes to install the wiring harness which was great for me 463059



- 118381
by:

Plugged in and worked great. A lot better than splicing and crimping wires. 450562



- 118381
by:
2004 Jeep Grand Cherokee

The kit was extremely easy to install and fits like a fine glove. So easy in fact that the factory could not have done better looking job. Works great although I rarely use my trailer but I know when I do, I can rest assured that the wiring will not be a problem as it used to be. 445961


Comments

have since started driving a different vehicle. My jeep bit the dust. I liked the harness and it always worked fine but I didnt get to use it too long. I do remember how easy and well thought out the installation process was. I do keep a link to your website and have turned on others to it. Sometimes it was already too late but now they know its there. Ill definitely keep you guys in mind in the future

Barry B - 10/25/2018

45040

- 118381
by:
2007 Jeep Liberty

I watched a video of theirs on Youtube which linked to the correct part and I bought what the video linked to, assuming it was the one shown in the video (without the factory 7-way). They sold me the one that uses the factory 7-way (which I don't have) and when I called asking to exchange it for the right one, they said it wasn't possible. They said they'd take it on refund, but are charging me for return shipping, and considering it's such a lightweight and cheap part to ship (and their website's mistake), I'm losing a significant portion of the money I spent on it. 438605



- 118381
by:

The T-wire harness was great, installed well and works fine. The Seat covers are great as well, durable and easy to install, will consider rear seat covers if available? The stabilizer bracket would not work with my platform rig, but looked of good quality and I will find a use for it. 434032



- 118381
by:

It was fast shipping and even though the part did not fit they were very fast about solving the problem. They replied very quickly and I would use this company again. 413931



- 118381
by:

It seems to have been very easy to install I might see if the other side of the connection would be included 400789



- 118381
by:
2000 Dodge Durango

Exactly what I needed for my 2000 durango. Simple plug and play couldn't be happier. 398840



- 118381
by:
2007 Jeep Grand Cherokee

I had a great experience with this company. They answered my email in a reasonable time and the shipping was very fast. Cheap prices, fast shipping, good communication, and a quality product. That pretty much covers my experience with them. 400066



- 118381
by:

great price right part! As always with you guys! 393046



- 118381
by:
2000 Dodge Dakota

I was in a hurry and I bought the wrong wiring harness. I have ordered the right wiring harness and it is on the way. My truck does not have the factory trailer connections for the wiring harness that I ordered. 392882



- 118381
by:

website was very helpful and easy to use. Told me exactly what to order and how to install, Items arrived and installed exactly like they said they would. Saved us $300 dollars and have exactly the same hitch we were quoted at several different trailer install places. Thank you etrailer!!! 386237



- 118381
by:

Item was just what I was looking for. Discription was dead on. 383445



- 118381
by:
2006 Jeep Grand Cherokee

Good product, if I ordered the right one. My mistake. Fast shipping. Now I have to order the right part. My bad. 371905



- 118381
by:
2003 Jeep Grand Cherokee

Still works great after a yr no issues, 344695


Comments

Still works as described no issues.

Derek - 02/22/2018

35040

- 118381
by:
2002 Jeep Grand Cherokee

Good product at a reasonable price. Shipped in a timely manner. 342662



- 118381
by:

quality product 340551


Comments

no problems

Scott - 02/13/2018

34670

- 118381
by:

Easy to install. Fit my vehicle perfect ly. 328894


Comments

Works as advertised

Gerry - 12/31/2017

32455

- 118381
by:
2006 Jeep Grand Cherokee

Hitch was super easy to install. Works great!! This product and the other products I ordered got here very quick, in order, with great instructions for use and install. Thanks. 327062



- 118381
by:
2006 Jeep Grand-Cherokee

Exactly what we needed and got it very quickly. Thanks 323404



- 118381
by:

Great price. Fast delivery. Easy to install. Many thanks. 277338



- 118381
by:
2001 Dodge Van

Right part for the truck and trailer. On time delivery! Great job guys! 255728


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Ask the Experts about this Tekonsha Custom Fit Vehicle Wiring

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


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  • Recommended Trailer Wiring Harness For 2008 Jeep Liberty
  • If you have the factory 7-way connector on the rear of your 2008 Jeep Liberty, You may be interested in the T-One Vehicle Wiring Harness, part # 118381, to give you a 4-way connector. I have attached a link to a product review video for this harness you can check out. If you do not have the connector on the rear of your Jeep, I recommend the Tow Ready Custom Fit Vehicle Wiring, part # 118554. This is an easy installation that requires no cutting or splicing and will give yo ua 4-way...
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  • How Do I Install a 5-way Flat Connector at the Back of my 2006 Jeep Commander to Tow my Boat
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  • What is the Correct Trailer Wiring Harness with 4-Pole Trailer Connector for 2001 Dodge Durango
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    view full answer...

  • Is there a Bolt-On Hitch Receiver for a 2004 Dodge Dakota to be Able To Carry Bikes
  • Thanks for sending us a picture. Makes a difference! What I recommend is going with the Curt 2 bike bolt-on rack # C18011 because it will mount to any ball mount or step bumper and can hold 2 bikes with a maximum weight of 70 pounds. Unfortunately the Curt ATV ball mount adapter # C45006 you referenced will not work because it will bend. If you end up going with a trailer hitch, I recommend the Class-III Draw-Tite # 75038 because it has a 500 pound tongue weight capacity and it's...
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  • Recommended Trailer Wiring Harness for 2005 Jeep Liberty
  • Of the three harnesses you mentioned, the # 118381 wouldn't work unless your Liberty has the OEM 7-way connector. The # 118381 would plug inline between the 7-way connector and the vehicle wiring harness. If your Liberty does not have the factory 7-way, your choices would be between the Tow Ready # 118524 and the Curt # C55382. Both harnesses would install in the same manner, plugging inline at the point where the taillight assemblies plug into the vehicle wiring. I'd recommend the...
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  • Troubleshooting Trailer Lights Not Working with Wiring Harness # 118381 on a 2002 Dodge Durango
  • First, in order to use Trailer Wiring Harness, # 118381, your 2002 Dodge Durango will need to be equipped with a factory tow package. If it does have a factory tow package, check the owners manual to find the fuses and/or relays related to the tow package to determine if anything is missing or needs to be replaced. If the Durango does not have a tow package, you will need to use a different wiring harness, # 118334. This harness plugs in line with the vehicle tail light wiring. I have...
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  • Trailer Wiring Harness for a 2005 Dodge Durango
  • If your 2005 Dodge Durango came with the factory installed 7-Way and for whatever reason it is no longer there then yes, using # 118381 will provide the lighting functions for the trailer: running lights, brake lights, and turn signals. If the vehicle did not come with a factory trailer connector then you would use harness # 118390 which plugs in line with the vehicle tail light wiring and requires a direct connection to the vehicle battery. I have linked some videos and instructions for you.
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Info for this part was:

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