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  1. Custom Fit Vehicle Wiring
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T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

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

Item # 118336
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Custom Fit Vehicle Wiring

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Custom Fit Vehicle Wiring 118336 - Custom Fit - Tekonsha
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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. Includes tail light converter. Call 800-298-1624 to order Tekonsha custom fit vehicle wiring part number 118336 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.
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Tekonsha Custom Fit Vehicle Wiring - 118336

  • Custom Fit
  • Trailer Hitch Wiring
  • 4 Flat
  • 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. Includes tail light converter.


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 a tail light converter to ensure that your vehicle's wiring matches that of your trailer
  • 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 amps per circuit
  • 1-Year limited warranty


Tail Light Converter

A tail light converter 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. The tail light converter combines 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.



118336 Tow Ready T-1 T-Connector - 4 Wire

Installation Details 118336 Installation instructions

This Product Fits The Following Vehicles



California residents: click here



Customer Reviews

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118336

Average Customer Rating:  4.9 out of 5 stars   (1105 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. Includes tail light converter.

- 118336
by:

The hitch is compatible to Honda CR-V (model 1998) and apparently fits well. One must be careful to adjust the exhaust system and check the engine rotation for smooth operation, otherwise it could produce noise. The electrical wiring is easy to install with little effort. My purpose is specifically to haul garden and landscaping items and this is a worth spending.



- 118336
by:
1993 Honda Pilot

On '93 Honda Pilot, installed wiring harness in about 20 minutes. Also installed Draw-Tite tow bar (75599) and Tow Ready 4-Flat Universal Mounting Bracket (118149) to stow wiring harness plug. None of the wiring harness is visible from rear of vehicle with only 4 - 6 inches underneath. All of the wire is tucked away in rear threshold where I found two grommets leading underneath the vehicle. After cutting out a space in the grommets for the wire harness to run I reinstalled grommets back into place. Very neat install, wire is snug behind threshold where plug was located. Worked as advertised.


Comments
No problems at all one year after the install.
CW - 03/27/2015



- 118336
by:

No issues what so ever just plug it in and ur good


Comments
After a year still no issues. Works great
Jacob - 05/13/2022


- 118336
by:

Arrived on-time. Installation instructions were easy to follow. Wiring harness was super easy. Just towed a 5,000 lb trailer from Home Depot to my house. Saved $200 since I was able to tow it myself.



- 118336
by:

Easy installation, works great. Very satisfied with the wiring harness.



- 118336
by:
2000 Honda V6

I had an old wood stove that needed to be transported to the metal scrap heap at the local landfill. The hitch and drawbar were already in my possession but I needed trailer wiring for a rental trailer. I looked at the trailer rental store's offering of a generic harness that involved splicing as part of the installation process; I suppose it would work just fine but this product seemed to be much easier to install. After the removal of three trunk lining fasteners I had access to the wiring plug that is standard issue for my Honda. I connected the etrailer mating half of the plug to the Honda plug, fussed with the location of the "box" and the wiring a little and I was done except for verifying with a voltmeter that all the functions were working. When not in use the bulk of the wiring is hidden in the spare tire well underneath the trunk floor panel. This harness works just fine on my 2000 Honda V6. I'm happy.



- 118336
by:
2005 Honda Element

As advertised, fit an '03 Element perfectly. hardest bit was getting at the vehicle connector, which is behind interior body panels for some reason (in this case, passenger side rear. On 2005 models and after there was a design change, you may want to look out for that). Routing the wires for easy access was straightforward as well. etrailer shipped quickly and item arrived well before expected.



- 118336
by:

The trailer wiring harness worked perfectly. Getting the panels off my Honda Element was a job but the wiring harness worked as intended.



- 118336
by:

I didn't have to pull off the rubber door gasket but I did have to remove the plastic piece across the back which broke the plastic fasteners. I think I needed a Phillips screwdriver and 10 mm socket wrench. I used the double stick tape that came attached to the module and didn't bother with the screw, where it is located I don't think is going to move. There is a cigarette lighter socket that should be removed before pulling the panel out but even without taking that step it wasn't hard to straighten the tabs and plug it back in to the connector. About a 20 minute job, not difficult.


Comments
Still working well after a year.
Christopher T - 07/18/2020


- 118336
by:
2006 Honda Pilot

I installed the 4 pin quick connect harness and the ETBC7 universal 7 pin kit on my 2006 Honda Pilot EXL to get it ready for towing our popup camper. The instructions are clear and the installation was fairly easy but did take over 4 hours start to finish. Connected to a tekonsha voyager BC taken from our old tow vehicle. The installation looks professional, I know it was done right, and saved about $200.



- 118336
by:

Etrailer best company I have ordered from in years. Order arrived instantly and is exactly as depicted online. Company defined product to match my vehicle in easy terms. The Tekonsha custom fit trailer harness is one snap connection and done. My vehicle tail lights are working again and trailer lights. Thank you.



- 118336
by:

Exactly as promised, plugs right into the car's wiring harness (for us that's a 2000 Honda Accord). No fuss, very easy to do. Will take you five minutes tops and two of those will be just gently removing the plastic fasteners holding the trunk's lining in place.



- 118336
by:

The wiring harness has served us well over the past year. installment was a relatively simple task. the online video was spot on and was all I needed to feel confident to handle the install. Very good product, worked first time and every time nad it is only surpassed be the thorough support from etrailer.com team :)


Comments
A year later and still no issues ... the harness was easy to install, tucks away nicely and is still working great!
Roger - 05/27/2021


- 118336
by:

Items were packed pretty well, nothing seemed to have moved or been damaged during shipping. Part fit as good as OEM, all hardware was correct and the harness fit perfectly.



- 118336
by:
2006 Honda CR-V

This hitch was exactly as advertised and fit my CRV perfectly!!! Used spray bottle with soap & water to lube the two upper muffler rear hangers and they slid off with little prying needed (did not need to remove the lower hanger in front of muffler). etrailer's installation videos for installing both this hitch and corresponding 118336 wiring harness were spot-on and very helpful (also a good video on the Curt website). Took my time tightening the hitch bolts to specs which was a bit awkward until I thought to use my ratchet extension bars. Maybe the easiest "car repair" I've ever done, and probably saved a lot of $$$ doing it myself. If you can change your oil, you can do this installation no problem! Also, etrailer promptly shipped this product for free (thanks, guys!) and it got here a day early. GREAT COMPANY! When I save up enough to buy roof rack rails in the near future, I'll be back...



- 118336
by:
2003 Honda Pilot

The trailer wiring harness was a great solution and I have attached some pics of how i ran the wires for the installation. I found some access holes in my 03 Honda Pilot to avoid pinching the wires in the liftgate.



- 118336
by:

We have 4 CRVs and 1 Pilot all rigged with the base plate. Good product. Never an issue. The most recent purchase was for the Pilot. No problems for installation and use. Install on Pilot was a little more difficult not because we weer also installing Transmission cooler- but no issues.



- 118336
by:
2004 Acura MDX

etrailer has been amazing to work with. Their customer service is top notch! I recently had to return an item and they made the process so easy. I will continue to shop with etrailer for all of my needs. Thanks etrailer!



- 118336
by:
2008 Honda Pilot

Fastest delivery I have ever had. Ordered Wednesday at 5PM, arrived Thursday at 3PM. I'm only a couple hundred miles from Wentzville, but still, excellent. The hitch receiver (2008 Pilot) installed quickly and easily. No need to remove spare or lower muffler. I supported the left end on a large cooler and quickly maneuvered the right side above the tail pipes. The mounting holes were right on target. I had to tap mine to remove rust, but that's easy as well. The wiring harness was also a snapto install. Simple to plug into existing fitting and the wiring box tucked away nicely beneath the trim as advertised. There are options about what to do with the wiring tail and trailer connector. I chose the method shown in the video...leave it rubber-banded in the storage well. Others have run it outside through available holes, but I did not want to leave it exposed to road grime. etrailer's videos were very detailed and shown on my specific vehicle for both the hitch and the wiring harness. Good values as well. If I were Draw-Tite (or Curt) I would include a complementary rubber plug with their logo...cheap advertising.


Comments
All products holding up well. Easy install, good quality. Works as advertised.
MoHusker - 09/08/2018



- 118336
by:

T one wiring harness was easy to install, and works very well. Good product



- 118336
by:
Honda CR-V

Haven't fully tested it, but installation was easier than anticipated. I recommend watching the video for options for routing the wires to the storage compartment in the CR-V. I cut a small slit in the corner, closest to the bumper, of the storage compartment and pulled the wires through. Honda provides a great place to store the wires! -A.



- 118336
by:

Product is exactly as described. Just plug it in to your existing harness wiring and bingo, you now have a four flat plug for your trailer. Works perfectly.



- 118336
by:
Honda Element

Everything went smoothly and with no issues. Install was straightforward with no snags. Now my daughter can use her Honda Element to tow a small trailer or go on whatever adventures she now wants.



- 118336
by:
1999 Honda Odyssey

Had weird acting trailer lights for quite awhile. When I checked voltages at the vehicle I noticed low voltages for one of the TS. I suspected the 4 way adapter that was installed in 1999 Odyssey. I purchased this one from eTrailer, hooked it into the van and it fixed the issues. The trailer lights are now rock solid. I guess the TS converter on the old one had an issue. All is well now.


Comments
Still working great, no issues :
Bill G - 08/08/2016



- 118336
by:
2005 Honda Pilot

The instructions were dead on and very simple to install. This is my second vehicle to use a Tekonsha wiring harness. It will be the only brand I'll use in the future.


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Show More Reviews

Ask the Experts about this Tekonsha Custom Fit Vehicle Wiring



  • What is Purpose of Converter Box On Tow Ready T-One Wiring Harness # 118336 For 2004 Acura MDX
    The black converter box on Tow Ready T-One Wiring Harness, part # 118336, is for use with vehicles, like your 2004 Acura MDX that have separate turn and brake light wires. Some vehicles send only one signal per wire, creating what is called a 3-wire system: one wire for the left turn, one wire for the right turn, and one wire for the brake signal (common on vehicles with amber turn signals). A converter will reduce it to a standard 2-wire system needed for wiring a trailer. There are still...
    view full answer...
  • Is there a Fuse that Needs to be Installed on a 2004 Honda Element for Wiring Harness
    There should be a 7.5 amp fuse that will need to be installed in the fuse box when you install the T-One Vehicle Wiring Harness # 118336. You will need to check with your local regulations and laws to determine if you need to have side clearance lights on your trailer before you remove them. Another option to reduce the amperage draw on your trailer would be to convert the lights on the trailer to LEDs as they draw considerably less than incandescent bulbs. Check out the link I provided...
    view full answer...
  • Locating Install Harness for Trailer Wiring in a 2000 Honda CR-V
    It sounds like your 2000 Honda CR-V is set up like the newer CR-Vs and the harness is actually behind the rear threshold. Check out the video I attached for more info on this. This harness fits several vehicles and all of them have different places that they hide the harness so I would check out the install instructions to see where the harness is typically located in other vehicles to give you more places to look.
    view full answer...
  • Troubleshooting Trailer Taillights that Don't Function Consistently
    This sounds like a ground issue. Ground problems normally show up when there is more draw on a system such as when you have the running lights on and then use another function like a turn signal or brake light. Make sure that the vehicle side and trailer side connectors are clean and free of corrosion inside and out. The main connector grounds should be attached to clean and corrosion free bare metal surfaces. The light grounds should also be attached to clean and corrosion free bare...
    view full answer...
  • What is the Wiring Loom Mentioned in the T-Connector Installation Instructions
    The wiring loom is the black plastic protective cover that is installed around a bundle of wires. The connector for the wiring harness will be taped down to the wiring loom at the factory to keep it from rattling and creating a annoyance that will cause customers to return the vehicle to have fixed. Once you have the connector located and remove the tape the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector, item # 118336, will just plug into the factory supplied trailer connector,...
    view full answer...
  • Testing Tow Ready Custom Fit Vehicle Wiring, # 118336 For Correct Functions on a 2005 Honda CR-V
    You could have a problem with the converter box in the Tow Ready Custom Fit Vehicle Wiring, # 118336, but to be sure, I would test the connector with something other than a plug in style test light. A trailer or a circuit tester like the Quickee # 3808 would be better. Some times, the plug type testers can cause a malfunction. To eliminate it as the problem another testing method will need to be done. With a trailer hooked up, you would simply run through the functions; left, right turn...
    view full answer...
  • Troubleshooting Reverse Lights that Illuminate on Trailer when Brakes are Applied
    Based on what you described and the fact that the trailer wiring harness part # 118336 is a plug-in harness I would suspect that the trailer wiring harness on your trailer is wire incorrectly. It sounds like the stop/turn signal on your trailer has been mistakenly been swapped with the reverse light circuit. When looking at the 4-way on your trailer the jacketed pin is the ground circuit, the one next to it should be the running lights, next to that should be left turn/stop, and the last...
    view full answer...
  • 4-Way Trailer Wiring Harness Recommendation for a 2011 Honda Pilot
    For trailer wiring for your 2011 Honda Pilot you would want the Tow Ready harness part # 118491 as it has been confirmed to fit your vehicle and will provide you with a 4-way trailer connection. I attached an install video for you to check out as well.
    view full answer...
  • Will Installation of a Trailer Wiring Harness Affect on the Speakers in a 2000 Honda CR-V
    Installation of trailer wiring harness # 118336 will not affect the speakers on your 2000 Honda CR-V. The harness plugs into a mating connector on the vehicle that is otherwise not being used and it is not tied into the speakers. I have included a link to a video showing an installation of this harness for you.
    view full answer...
  • Trailer Running Lights Not Working on Trailer Towed by a 2003 Honda Pilot
    Some tow package wiring harnesses on vehicles can overcome ground issues better than others. Although the trailer works with other vehicles, since some vehicles are more sensitive about ground issues, a ground problem on your trailer could still be causing the problem you are experiencing. Ground problems normally show up when there is more draw on a system such as when you have the running lights on and then use another function like a turn signal or brake light. Make sure that the...
    view full answer...
  • Left Side Trailer Lights Don't Work When Towing with 2003 Honda Pilot
    I agree that it sounds like you have a ground issue. Ground problems often present themselves through strange wiring issues. Having a ground issue may not cause all of the trailer lights not to work. It is not uncommon for only one side of the trailer lights to not work, or the lights to dim when the blinker is used, when there is a ground issue. When stripped back, a black ground wire would more likely indicated that it has somehow been fried, not corroded. Corrosion usually presents...
    view full answer...
  • Do All 2003 Honda Pilot Models Have Connector in Cargo Area for Plug and Play Trailer Connector
    According to my contact at Tow Ready, all 2003-2008 Honda Pilots had the connector for installing the # 118336 trailer wiring harness. The connector is located under the threshold in the rear cargo area, as shown in the photo I've provided and the video I've linked for you.
    view full answer...
    Image 1 for
  • Why Does Trailer Wiring for 2004 Honda Pilot Route Through Back Door
    Having the 4-way run out of the back hatch is actually the preferred method although it seems like it wouldn't be. Having the 4-way stored inside the cab of the vehicle keeps it protected from rain and moisture to prevent corrosion and keeps it protected from damage to the wiring or connector by rocks or debris that might be on the highway. You can run the wire through the vehicle if you wish but just keep in mind that this does take more time and you may end up needing additional wire...
    view full answer...
  • Trailer Wiring Harness Fit Recommendation for 2005 Honda CR-V
    For trailer wiring confirmed to fit your 2005 Honda CR-V you would want the Tekonsha kit part # 118336 which is a confirmed fit. It comes with a converter box and installs very easily by plugging right into a factory port at the rear of your vehicle. I attached an install video for this kit on a similar 2005 Honda CR-V as well.
    view full answer...
  • Install Instructions and Video for Tow Ready Wiring Harness part # 118336
    I attached a link to the install instructions for the Tow Ready wiring harness part # 118336 as well as attached an install video that will walk you through the entire process.
    view full answer...
  • 2003 Honda Pilot Trailer Wiring Recommendation
    For your 2003 Honda Pilot the Tow Ready trailer wiring harness part # 118336 is a confirmed fit and would work well. All of the connections are there on your vehicle as well. I attached an install video for more information for you to check out as well.
    view full answer...
  • Recommended Trailer Wiring for 2007 Honda Pilot
    The T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118336 is a confirmed fit for your vehicle. I looked at your owners manual online and there is not a separate fuse for this wiring. This harness only draws 4 amps per circuit on the tail lights and only up to 2.1 amps for the stop/turn lights so you shouldn't have any issues.
    view full answer...
  • Location of Passenger Side Panel to Install the T-One # 118336 on a 2004 Honda Element
    The passenger side trim panel is located at the rear of your 2004 Honda Element. When you open the rear hatch on your Element it is the panel directly to your right. This is where you will connect the Tekonsha T-One # 118336. Before removing the side panel you do need to remove the cargo door on the floor and also remove the screws holding the spring loaded hinge cover. I have linked the installation details to this answer page for you to check out.
    view full answer...
  • T-One Vehicle Wiring Harness Designed to be Closed in The Hatch When In Use
    The flat four pole trailer connector for your vehicle is designed to be stored in the cargo area until needed. When towing a trailer you can pull the wiring out through the back hatch and simply close the door on it making sure the wiring is not near the door latch.
    view full answer...
  • Wiring Instructions for Part # 118336 on a 2003 Honda CRV
    I do not have a video showing that install, but I have added a link to the instructions provided by the manufacturer for that wiring harness, part # 118336. Please refer to page 3 for the instructions that are specific to your vehicle.
    view full answer...
  • T-One Vehicle Wiring Harness Not Working as it Should
    Hi, I am sorry you are having trouble with your trailer wiring. You need to test the wires on both sides of the converter box. On the car side you will have 5 wires and on the trailer side you will have 4 wires. The extra red wire on the car side will be your brakes and the converter transfers that over to the yellow (left turn) and Green (right turn) wires to allow your cars 5 wire system to work with the trailers 4 wire system. The brown wire is the tail lights and the white wire is the...
    view full answer...
  • Trailer Running Lights Turn Off When Truck Is Started, Turn On when Truck Is Turned Off
    It sounds like a ground and/or short circuit problem. What you will want to do is disconnect the trailer from the vehicle. use a circuit tester like # 40376, to test the 4-Way on the vehicle side. If the signals are all coming through like they should, then you know the problem is on the trailer side. If the signals are not coming through correctly, the converter box could be bad. To test the converter, test the signals going into the converter from the vehicle, if those are correct but...
    view full answer...
  • Replacing OEM Trailer Wiring Harness with # 118336 for 2004 Honda Pilot
    Lets begin with the purpose of the converter box. The wiring system that trailers use is very simple. The turn signal and the brake lights are carried on the same circuit. The left turn and brake light signals are carried in the yellow wire down the drivers side of the trailer, and the right turn and brake light signals are carried on the green wire running down the passenger side. This is the tried-and-true system that has been used for years. The converter comes in when you have a vehicle...
    view full answer...
    Image 1 for
  • How to Install a Hopkins Trailer Connector on a 2003 Honda Element
    Check out page 5 of the instructions I attached for the Tow Ready Custom Fit Vehicle Wiring # 118336. This is a different brand connector but it does the same thing as the Hopkins Custom Fit Vehicle Wiring # 43105 and installs the same way so the instructions will work for you as well. The instructions I attached show you exactly where the panels are that need to be removed and how to remove them.
    view full answer...


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