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

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

Part Number: 118438
In Stock
$40.71
Retail:$68.39
You Save: 40%
Custom Fit Vehicle Wiring

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118438 - 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 - no cutting, splicing or tapping required. Powered ModuLite reduces strain on wiring system. 1-800-940-8924 to order Tekonsha custom fit vehicle wiring part number 118438 or order online at etrailer.com. Free expert support on all Tekonsha products. Great prices 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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  • Reviews (535)
  • Q & A (0)
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Tekonsha Custom Fit Vehicle Wiring - 118438

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

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 - no cutting, splicing or tapping required. 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 - no cutting or splicing of wires
    • Locate connection point in rear cargo area
    • Plug in connector
  • Includes ModuLite to ensure that your vehicle's wiring matches that of your trailer
    • Powered module 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: 4.2 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 passenger's-side interior trim panel in your rear cargo area. Once you've plugged in the connector, insert the included fuse into your fuse panel as indicated in the instructions.


Once installation is complete, the 4-way flat connector will be stowed in the jack storage compartment of your rear cargo area.


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


ModuLite Powered Tail Light Converter

A ModuLite power module is built into this T-One connector. Because most trailers run on a two-wire system - wherein the brake and turn signals are carried on one wire - the separate brake and turn signals from your vehicle's three-wire system need to be combined so they are compatible with the wiring system of your trailer. This power module functions as a tail light converter to combine the brake and turn signal functions of your automobile so that they run on one wire to properly activate your trailer's tail lights. Note: This will not affect how the tail lights on your vehicle operate.


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.



118438 Tow Ready T-1 T-Connector - 4 Wire - Modu-Lite

Installation Details 118438 Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Customer Satisfaction Score:


Customer Reviews

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118438

Average Customer Rating:  4.9 out of 5 stars   (535 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 - no cutting, splicing or tapping required. Powered ModuLite reduces strain on wiring system.

by:
Honda

Works on my 2009 Honda Odyssey



by:

Wiring harness was very easy to install.



by:

Great shipping and great product.



by:
2010 Honda Odyssey

Easy install...great service.



by:
2008 Honda Odyssey

bit tricky to get car panels reattached



by:

Video was a great help.



by:

Ok



by:

easy install



by:
2007 Honda Odyssey

Fast delivery and easy to install



by:
2007 Honda Odyssey

Harness worked great.



by:

Works perfectly.



by:

Great website and online ordering.



by:
2008 Honda Odyssey

Awesome! Thanks!



by:

Easy to install!!!



by:

Easy to install. Great product!



by:
2006 Honda Odyssey

works great!



by:
2006 Honda Odyssey

Easy installation & works great!!!!!



by:

Wow, These guys are Fast!! and fast self install.



by:
2005 Honda Odyssey

Nice product, easy to install, watched the video and it really helped.



by:

Got it today...really quick! Had it installed in about 20 minutes! No problems.



by:

harness was easy to install took about 10 to 15 minutes



by:
2010 Honda Odyssey

Product fit exactly as indicated. Installation took no more than 30 minutes



by:
2008 Honda Odyssey

Very simple to install. Watched the video once!!



by:

Very good product. thank you. Fast delivery.



by:
2007 Honda Odyssey

This was so easy to install... The video was extremely helpful.


25
535
Show More Reviews

See what our Experts say about this Tekonsha Custom Fit Vehicle Wiring

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    Yes, I will be happy to help add tow options to your 2007 Honda Odyssey. First you will need Draw-Tite Max-Frame Trailer Hitch Receiver # 75270. This hitch has a maximum tongue weight rating up to 675 lbs and gross trailer weight rating up to 4,500 lbs. If the towing capacity in your Odyssey owner's manual is lower that the capacity of this hitch, tow according to the weight limits in your manual. There is no drilling required for installation. Next, you will need 4-way Flat Trailer Connector...
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  • Trailer Hitch and Wiring for a 2006 Honda Odyssey
    For towing I recommend going with a Class III trailer hitch with a 2 inch receiver for your 2006 Honda Odyssey. The most popular option is Draw-Tite trailer hitch # 75270. I have linked a video showing an example installation. It is a very straight forward install so I am sure you can do it yourself at home. Since you plan on towing I also recommend etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with a 3/4 inch rise or 2 inch drop and one with a 2-3/4 inch rise or 4...
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    If you only bought the adapter the first thing you're going to need is an actual 4-way on your 2010 Honda Odyssey. The # 118438 will plug into the connection point in your rear cargo area. Once this is done, you can plug the 4-way end into your 7-way adapter to carry over the signal functions for your trailer. After that, you will need the Wiring Kit for 2, 4, 6, and 8 Brake Electric Trailer Brake Controllers # 5506. This comes with everything you need to complete the installation of your...
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  • Plug and Play Wiring Harness for 2010 Honda Odyssey EX-L
    Hello again Don; we do have a plug and play wiring harness for your 2010 Honda Odyssey. The Tekonsha T-One Vehicle Wiring Harness # 118438 is going to be the most reliable. This will plug into the connection point in your rear cargo area. I went ahead and attached an installation video below for your reference.
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  • Comparing Trailer Wiring Harnesses for a 2008 Honda Odyssey
    The Curt wiring harness # C56161 and the Tow Ready wiring harness # 118438 for the 2008 Honda Odyssey install the same way. Both install behind in a junction box located in the cargo area of the van. This is an ideal setup because it uses the factory location on the vehicle. The Curt harness actually uses a newer technology inside the converter box. Both harnesses would work well for you. I have linked instructions and a video for you.
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  • Trailer Wiring Harness Recommendation for a 2007 Honda Odyssey
    Honestly, either the Curt Custom Fit Vehicle Wiring # C56161 or the Tow Ready Custom Fit Vehicle Wiring # 118438 would work for you since they basically do the same thing. However, Curt uses a more modern style circuit board that builds less heat and generally lasts longer than the style of circuit boards that are in the Tow Ready converters so I would go with the # C56161. I attached installation instructions for the # C56161 for you to check out also.
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  • 7-Way and Brake Controller Wiring for 2008 Honda Odyssey
    The first thing you'll need is a 4-way trailer wiring harness that fits your 2008 Honda Odyssey like the # 118438 which you'd then convert to a 7-way with the 4-way to 7-way adapter part # ETBC7 which also comes with everything needed to wire in a brake controller like the Brake EVN # TK63VR which uses an inertia sensor to detect how hard to apply the trailer brakes, is very reliable, and is priced great.
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  • Trailer Wiring Harness for 2006 Honda Odyssey
    From the looks of the photo you sent in, you may have the wrong trailer wiring harness for your 2006 Honda Odyssey. I was unable to find your order number, but the wiring harnesses that fit an '06 Odyssey do not have the extra plug/cap like you are showing. That said, from the photo it looks like that is just a cap for the plug, but that would be unusual because there's really no reason to have a cap on the T-connector like that. The wiring harnesses that fit your 2006 Honda Odyssey are...
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  • Parts Needed to Install a 7-Way Trailer Connector on a 2007 Honda Odyssey
    I installed a trailer hitch and trailer wiring on my mother-in-laws 2007 Honda Odyssey and I can tell you that unfortunately there are no plug-in 7-way wiring harnesses. To install a 7-way connector on your Odyssey, I recommend first installing a 4-way harness like the Tow Ready T-One Wiring Harness, # 118438. This is a plug-in harness that does not require cutting or splicing. I have attached the installation instruction and an installation video on a 2007 Honda Odyssey for you to check...
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    Because of the mounting locations present on a 2008 Honda Odyssey and the fact that all of the available hitches have cross tubing that is straight across, all of the hitches will be visible on the van. You can look at the pictures on the product pages for the hitches to get a good idea of what they will look like on your van. I have included a link to all the hitches for you to view. I recommend going with a class III trailer hitch because they have a higher capacity and are compatible...
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  • Towing Package for a 2008 Honda Odyssey
    The trailer hitch I recommend for your 2008 Honda Odyssey is the Draw-Tite Max-Frame # 75270 because it doesn't require any fascia trimming (like the etrailer and Curt might). This, as well as the other trailer hitches, exceeds the weight ratings of your Odyssey so you can be confident that you are getting the most out of the trailer hitch. Be sure to check the weight ratings of your Odyssey in your owner's manual and keep from exceeding it. To finish out your towing setup I recommend...
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  • Hitch Recommendation for a 2006 Honda Odyssey
    For your 2006 Honda Odyssey I would recommend the Draw-Tite part # 75270. This is a Class III hitch that would work very well. I attached an install video for you to check out as well. To complete your towing setup you may also want the wiring harness part # 118438. For ball mounts I recommend the etrailer Ball Mount Kit # 989900. It comes with 2 ball mounts, 2 balls, a hitch pin with clip, and a carrying bag.
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  • Weight Distribution And Brake Controller Recommendation For 2008 Honda Odyssey
    After doing some research I found that the maximum cargo capacity for your 2008 Honda Odyssey is 1,322 lbs. This would include the combined weight of any passengers along with any other items carried in the van. The weigh distribution I recommend for you is the Reese Light Duty Weight Distribution System w Sway Control, part # 66557. This system can handle up to 4,000 lbs and tongue weight from 250 to 400 lbs. This system also features trunnion bars, an adjustable shank, and an anti-sway...
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    On your 2010 Honda Odyssey all the trailer hitch receiver options will be noticeable from the back as even the crosstube is exposed. I recommend the Draw-Tite Trailer Hitch Receiver - Custom Fit - Class II - 1-1/4" # 36417 which is the least noticeable based on size. This is your best option for being discreet. The Draw-Tite Max-Frame Trailer Hitch Receiver - Custom Fit - Class III - 2" # 75270 will give you more options for accessories and greater strength while being a little more...
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    I can provide you with a video of different brand's wiring harness that will install the exact same as the Curt Custom Fit Vehicle Wiring # C56161 that you referenced. The video I attached shows the Tow Ready Wiring Harness # 118438 being installed on a 2010 Honda Odyssey just like yours.
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  • What Parts are Needed to Install a Brake Controller to be Used Between 2 Different Vehicles
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  • Curt Trailer Wiring Harness for 2006 Honda Odyssey has Constant Power
    Are the lights on the trailer actually lighting up or just the circuit tester? If the trailer has LED lights then it is more likely that Curt harness # C56161 will cause them to dimly light up. Curt trailer wiring harnesses that are powered like this one sometimes have this issue. The converter is working properly but for some reason a little power bleeds through causing this exact issue. The Tow Ready harness # 118438 does not have a history of this issue and would be the preferred wiring...
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  • Weight of Curt C12031 Class II Hitch
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  • Troubleshooting Trailer Lights not Working After Harness Install
    There are a number of steps for you to take to figure out exactly why the lights on your trailer are not working. You did not specify the harness you used, but for a 2007 Honda Odyssey, there are three fits, the T-One # 118438, Curt # C56161, and Hopkins # HM11143115. To start, we'll isolate the problem to either the trailer or vehicle. You can do this by using a circuit tester such as # PTW2993 to check the functions of the 4-way plug while somebody else engages them (brake, turn signal,...
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  • Where Does the Fuse Install From Tow Ready T-One Wiring Harness # 118438 on 2005 Honda Odyssey
    Sounds like you are looking at position #5 on the drivers side fuse box of your 2005 Honda Odyssey Touring. When installing the Tow Ready T-One Wiring Harness, part # 118438, on your Odyssey you will want to locate the fuse compartment on the passenger side kick panel, near the glove box. Open the fuse compartment and place the provided 7.5 amp fuse into fuse position #5 in the fuse box. Attach the fuse label to fuse cover in position #5. I am including a link to the installation instructions...
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Employee Reno H
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