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  1. Custom Fit Vehicle Wiring
  2. Tekonsha
  3. Custom Fit
  4. Trailer Hitch Wiring
  5. 4 Flat
  6. No Converter
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

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

Item # 118417
Our Price: $27.04
You Save: 38%
Custom Fit Vehicle Wiring

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Custom Fit Vehicle Wiring 118417 - 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. 1-833-496-1390 to order Tekonsha custom fit vehicle wiring part number 118417 or order online at 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 (119)
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  • Why etrailer?

Tekonsha Custom Fit Vehicle Wiring - 118417

  • Custom Fit
  • Trailer Hitch Wiring
  • 4 Flat
  • No 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.


  • 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 points behind passenger's-side tail light
    • Plug in T-connector
  • Constructed of 16-gauge bonded wire
  • Comes with dust cap for 4-way flat connector


  • Maximum amperage: 7.5 amps per circuit
  • 1-Year limited warranty


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

T-One Connection Location Points Behind Tail Lights

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.

118417 Tow Ready T-1 T-Connector - 4 Wire

Installation Details 118417 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 - 118417

Average Customer Rating:  4.9 out of 5 stars   (119 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.


Absolutely love the hitch super easy install just pull down the exhaust and bolt it in took no more than 30 minutes to fully complete. Lights were super easy just a clip on all had to do was remove the passenger tail light 10/10 would definitely recommend.


My only complaint was that the boxes were ripped up real bad and the wiring Box was crushed pretty good But everything seems to be OK

2011 Chevrolet Impala

Good service and parts fit,worked well

by: 08/16/2022
2009 Chevrolet Impala

No splicing. Connect and ready to go.

2006 Chevrolet Impala

The T-One wiring harness for my 2006 impala was just as described. I am not that mechanically inclined when it comes to wiring, but I was able to install this product in less than 30 minutes. And that was taking extra time to make sure the wires did not come in contact with the frame to rub the wires.My product arrived in just a few days. Just in time to pick up my new trailer!
Thanks for a GREAT product.

Product still satisfactory. No problems at all. I have told other people about the product and where I got it and how easy it was to install.
Kevin - 04/11/2016


This Draw Tite hitch was super easy to put on and am very leased with wiring harness. Everything went together smoothly and I am very happy with the end result!!!

Fantastic!! I tow a trailer with a motorcycle to Florida and back to Illinois every year and wiring is still perfect!!! Definently 5*
Gil J - 05/21/2015


They made it easy to install

Great i have installed one on my 08 Impala and another on my Daughter encore 2015 and brought the 5 bike mount hitch.
James A - 02/26/2022

2008 Chevrolet Impala

2008 Impala wiring harness, unsnarled the wiring of my trailer to the car. I had poked hole with my test light and could not get it total working correctly, sought a solution and googling found this etrailer had the wirng harness at a good price for the non-soldering hook up of the car lighting, brakes, turn signals all to the 4 wire connector. same as the trailer had. No problems, removed the tail light as the videos showed and unplugged to plug this harness in and ...done...simple and easy. My sincerest thanks !

2011 Chevrolet Impala

Ordered a hitch and wiring harness form etrailer on a Tuesday evening and received it on Friday of the same week. Since my order was over a certain amount, I received free shipping. I was informed when my order shipped that etrailer had upgraded my shipping again, at no cost. This in my opinion is what customer service is all about. My order was correct and the hitch is first quality and installed easily. I would highly recommend using etrailer and certainly will in the future.

Chevrolet Impala

Only used this a couple times as I installed the hitch primarily to hold my bicycle rack but has worked fine the few brief times I used the Impala to haul/move the trailer. Easy installation. A+++

Still going strong a year later!
Scott - 02/17/2019


A very easy installation. 2 people needed
Wiring harness also very easy
It took 2 hours to install. I took my time

2013 Chevrolet Impala

I bought this along with the Draw-Tite hitch. very simple and very good quality. Did the job in 15 minutes. It took me longer to remove and replace all of the carpeting in the trunk behind the light than it did to install the wiring. it fit perfectly and worked excellent. No splicing, no loose wires, no trouble with my lights in over 1000 miles of traveling last summer (2015)


Arrived on time, easy to install, has lasted a year now in the harsh wisconsin weather and shows no sign of breaking. A+ product.

Works great, the connectors have withstood my complete lack of care by leaving them uncovered through rain and snow and salt in Wisconsin. May have to clean them a bit with some circuit cleaner next year but still reliable and functional.
john r - 02/20/2021

2009 Chevrolet Impala

Both the hitch and the t-connector work beautifully and were super easy to install. I use a light duty trailer to haul building construction materials a few times a month and the hitch works great.


I was amazed at how fast the order was shipped out and I received it. Great customer service.

2010 Chevrolet Impala

I received the trailer hitch and t connector this morning. It took me all of 10 minutes to connect the wiring and maybe an hour to install the hitch on my 2008 check impala. This is the second hitch and electrical connections I have purchased from Etrailer. I priced someone else to install and it was over 400.00 with all parts. Excellent deal and fast shipping.

2010 Chevrolet Impala

Worked great pulling a [rental trailer] on a 1000 mile move. Easy installation following the video. Used the taillight mounting bolt instead of the included self tapping screw for the ground connection.

2010 Chevrolet Impala

I would recommend just watching the website videos a couple of time through for the installation instructions for this item if they are available for your vehicle. It was so very easy to install. I might have spent no more than 15 minutes to do it and that would include encasing the wires in some protective harness tubing too! It couldn't be any easier unless you had someone install it for you.


Customer service answered my questions promptly and professionally. The hitch order arrived promptly and I Installed it yesterday. The installation videos for the hitch and electrical wiring were very helpful. They were straight forward and seeing the install gave me the confidence to do it myself. Only possible suggestion is on the videos state the socket size of nuts, Trailer ball, and the ground nut/screw. Overall very good service & follow up!

2015 Chevrolet Impala Limited

Was just what i needed.....priority mail here in 2 days....plug and play....took 5 min to install....the wifes not happy im putting a tow package on her new car.....but its done....and im happy it works.....

After a year..its still working on the car.. and we are still married...
Bill S - 05/01/2018

2008 Chevrolet Impala

recieved wiring harness in 4 days that included a weekend. watched viedo on installation & was able to install on my vechiel in about 30 min from start to finish working as it should. very pleased with etrailer. If I ever need a trailer product I will contact them before I buy.


Installation was remarkably simple and it was as close to 'plug and play' as someone could hope for.


The wiring harness arrived on schedule. I was very pleased with how easy it was to install. GREAT PRODUCT. I would recommend to friends and family.

2010 Chevrolet Impala

I am pleased with the quality of this product. After having it installed on my 2010 Chevy Impala for a year, I have used it plenty of times to tow a 6x4 trailer, and a boat trailer. I especially like that there is a protective cap for the connector. Hopefully it lasts the lifetime of the car.


The product arrived on time, installed easily with no trimming or soldering of wires. I am very satisfied with product and recommend it as the only way install a wiring harness.

Show More Reviews

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

  • Availability of Trailer Wiring Harness for 2007 Chevy Monte Carlo
    To install a 4-pole trailer connector on your 2007 Chevy Monte Carlo, I'd recommend part # 18252. This trailer connector would need to be tapped into the existing taillight circuits but the included circuit tester would make installing the trailer connector pretty simple. You'll need a helper to sit in the driver's seat for you. Begin by accessing the rear of the taillight assemblies as you would if you were changing a burned out taillight bulb. Find the vehicle's taillight wiring harness...
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  • Uhaul Trailer Wiring Harness Causes Brake Light and Blinker to Not Work on 2009 Chevy Impala
    The wiring harness used on your 2009 Chevy Impala must not be grounded properly or it is possible that there are bent or broken pins in the harness they used. The ground needs to be attached to clean and corrosion free bare metal surface. There can't be any paint or coating either. Check the connectors for the harness to see if there are any bent or broken pins. A bent pin might be able to be bent back but if a pin is broken the harness will need to be replaced. I recommend # 118417. I...
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  • Troubleshooting Stop/Turn Signals Not Functioning on a 2013 Chevy Impala with Tow Ready Harness
    Most likely the problem is the grounds of your trailer wiring since the stoplight/blinker circuits require more amperage and that's typically where an insufficient ground problem shows up. Here's how you will test everything though: First thing you should do at this point is test the 4-way of the wiring harness with a circuit tester part # PTW2993 for voltage on all of the right pins when the taillight signals are being applied. Just like in the video I attached. If the voltage checks...
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  • Parts Needed to Install a P2 Trailer Brake Controller on a 2013 Chevy Impala
    The 2013 Chevy Impala and most other cars do not have tow package wiring so there is no wire bundle or plug in port under the dash to plug in a brake controller. It will be a hardwire installation. The best place to run the wires from the controller to the battery would be at or near an existing harness that goes through the firewall. Ideally, you would run the wire without making any additional holes. But sometimes, there is no space at all to shove a wire through at an existing exit/entry...
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  • Malfunction Turn Signal Light on Sunline Travel Trailer
    The first step would be to check the wiring from the malfunctioning light all the way up to the connector. Make sure all the connections are reasonably clean and secure, and check for frayed wires. If everything looks good from there, I would begin to look at the tow vehicle wiring. Check to make sure your connections are clean and secure. We have a few handy devices that could help you check all this. You could use a circuit tester like part # 40376 to check to see what connections are...
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  • Recommended 6-Way Wiring Harness for 2013 Chevrolet Impala
    I would be happy to help you. The connector on your 2018 Aspen camper is a 6-way connector. In order to get a 6-way connection on your 2013 Chevrolet Impala you will need to start with a 4-way. For a 4-way, I recommend the # 118417 T-One Vehicle Wiring Harness from Tekonsha. This is a custom fit wiring harness and plugs directly into connection points behind the passenger's-side tail light. For the 6-way connection, you want the # ETBC6 Universal Installation Kit. This includes all of...
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  • Why Does Hopkins Trailer Wiring Harness Install Differently than Others for a 2011 Chevy Impala
    The Curt wiring harness # C56046 as well as the Tekonsha harness # 118417 both plug into just one side of the 2011 Chevy Impala. The main tail light wiring harness that runs from the front to the back of the vehicle is located on that side so it is possible to just tap into that harness. The Hopkins harness # HM11141595 is just a different design. The connectors for the passengers side do not have the wiring in them to get the signals for the left side of the vehicle like the other harnesses...
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  • Is Trailer Hitch For 2008 Chevrolet Impala Guaranteed To Fit
    The trailer hitches we offer for your 2008 Impala are guaranteed to fit. These hitches are designed specifically to fit your car frame. The trailer hitch you came from is the Curt, part # C12252. This is a Class ll hitch and it has a 1-1/4 inch receiver opening. The other trailer hitch is the Draw-Tite, part # 36407. This is also a Class ll hitch with a 1-1/4 inch receiver. I recommend the Draw-Tite hitch because it does not require a stabilizing strap like part # 18050 for all non-trailer...
    view full answer...
  • Can a 2008 Chevrolet Impala LTZ Tow a Snowmobile
    Your owners manual is the best resource to use when determining towing capacities of your vehicle, see section 4. I found a copy of the owners manual for a 2008 Chevrolet Impala and Chevy states that an Impala can tow a trailer, but the gross trailer weight must not exceed 1,000 lbs. Keep in mind, Chevy gives the Impala a maximum towing capacity of 1,000 lbs assuming the driver is the only additional weight in the vehicle. If there will be additional passengers and cargo in the vehicle,...
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  • What Trailer Hitch And Wiring Harness Is Recommended For A 2005 Chevrolet Impala
    I would recommend the Draw-Tite Class II 1-1/4 Inch Hitch # 36407. It is a Class II hitch with a 3,500 lbs. towing capacity and a 300 lb. tongue weight capacity. I am sending a link to the installation instructions on the hitch. If you will be towing with the hitch, you will need ball mount part # 36061. You will also need a hitch ball like the Tow Ready 2 Inch Hitch Ball # 19258. For wiring, you will use the Tow Ready T-One Wiring Harness # 118512. This harness will plug into the vehicles...
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  • Recommend Correct Trailer Wiring For My 2010 Chrysler Sebring
    For the correct wiring for your 2010 Chrysler Sebring, you would need Draw-Tite Custom Fit Vehicle Wiring, part # 118444, which plugs in-line with your tail light wiring connectors and connects to your battery via included fuse. The item you selected, T-One Vehicle Wiring Harness, part # 118417 is designed to fit the 2006-2011 Chevrolet Impala. The item you referred to, 4-Pole 60 Inch Long Vehicle End, part # 18002, will not work for on your Chrysler Sebring as it has a 3-Wire System...
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  • Trailer Hitch and Towing Capacity of a 2008 Chevrolet Impala
    From my research the 2008 Chevy Impala can tow up to a 1,000 pound trailer. You want the loaded trailer to stay under 1,000 pounds. As far as not scraping the ground I'm not sure what you're referring to but if the trailer is not overloaded and is loaded with the tongue weight between 10 and 15 percent of the trailer's weight then you shouldn't have any issues. You also want to make sure the trailer is level when towing. As for the hitch receiver I recommend the Draw-Tite # 36407. ...
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  • Recommended Trailer Hitch Receiver And Components For 2011 Chevy Impala
    There is not a 2 inch receiver available for a 2011 Impala. Only the 1-1/4 inch options like the Draw-Tite # 36407 and the Curt # C12252. Both of these hitches have a rated tongue weight of 300 lbs and towing capacity of 3500 lbs, so even with the smaller receiver, they can still handle some weight and are usable for light-duty towing. If you will be using this hitch receiver for towing, I recommend the Class II Drawbar 3-1/8" Rise (Kit) # 36061 along with the 2 inch hitch ball like...
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  • Could 2008 Chevy Impala Transport Dirt Bike
    Motorcycle carriers like the Ultra Fab part # UF48-979033 that you referenced require a 2 inch size trailer hitch installed on the vehicle they are used with. Your 2008 only has 1-1/4 inch hitches available like the Draw Tite hitch part # 36407. Only way you'd be able to transport a dirt bike with your Impala would be with a trailer and this hitch. For a ball mount you'd want the part # 36061, hitch ball # 19257, and trailer wiring # 118417.
    view full answer...
  • Parts Needed for 2011 Chevrolet Impala to Allow Towing Power Chair on Utility Trailer
    You are correct that the 1-1/4-inch Class II hitches made for your 2011 Chevrolet Impala have a tongue weight rating of 300-lbs. This means that you cannot transport a 445-lb powered wheelchair on any hitch-mount carrier, but you can use a small trailer. The hitch I recommend is Draw-Tite # 36407 that you referenced. It offers a no-drill installation and costs less than the same-capacity Curt model. An installation video is linked for you along with the written instructions. For a compatible...
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  • Recommended Hitch And Combination Transmission/Oil Cooler For 2009 Chevrolet Impala
    For your 2008 Chevrolet Impala, I recommend the Draw-Tite Trailer Hitch, part # 36407. This is a Class ll hitch and has a 1-1/4 inch receiver opening. The drawbar I recommend for this hitch is part # 36061. This features a 3-1/8 inch rise, and uses a hitch ball with a 3/4 inch diameter shank. This includes the pin and clip. For a 1-7/8 inch hitch ball I recommend part # 19257, and for a 2 inch hitch ball I recommend part # 19258. Transmission and oil coolers are not vehicle specific....
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  • Trailer Hitch Comparisons and Recommendation for a 2012 Chevy Impala
    Hidden Hitch and Draw Tite are both made by the same company so basically they are the exact same with the exception that the Hidden Hitch part # 90137 (no longer available) comes with a ball mount and a pin and clip and the Draw Tite part # 36407 does not come with this. Curt is it's own company so the part # C12252 would be similar but made by a different company. The biggest disadvantage to Curt is the requirement of a stabilizer strap like part # 18050 when used with a non-supported...
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  • Trailer Hitch Installation Instructions, Drawbar, Hitch, Ball, and Wiring for a 2007 Chevy Impala
    There are basically 6 steps to install the Draw-Tite Trailer Hitch, # 36407, on your 2007 Chevy Impala. First, the exhaust must be lowered. Next, install the carriage bolts and blocks through access holes in the vehicle frame on both sides. Then, install carriage bolts and blocks through access holes in the vehicle cross member. Next is to raise the hitch into position and use the washers and nuts to secure the hitch. Then, tighten the nuts to the torque rating specified in the instructions...
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  • Will the Draw-Tite Class II Trailer Hitch # 36407 Fit on a 2009 Impala LTZ with Dual Exhaust
    Yes, the Draw-Tite Class II Trailer Hitch, item # 36407, is designed to work with the dual exhaust models. There is not a lot more time, or trouble, required for installation on dual exhaust models. The only difference is that you have to lower the drivers side exhaust as well as the passengers side. We have an installation video on a 2007 model that has the dual exhaust for you to review, see link. I have also included a link to the installation instructions for you to review. Some...
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  • Bolt Leader and Wiring Harness for a 2007 Chevy Impala
    All of the hitches sold on our website come with the necessary hardware to install the hitch on its respective vehicle, but do not include the tools. If you should decide you need to purchase a bolt leader for the installation of the Draw-Tite Class II Trailer Hitch Receiver, item # 36407, you will need the 1/2 inch Bolt Leader, part # 80101-1. The T-One Wiring Harness for your 2007 Chevy Impala is sold separately from the hitch, and it is the T-One Vehicle Wiring Harness, item # 118417....
    view full answer...
  • Will the Trunk Open on a 2007 Chevrolet Impala With a Trunk Mounted Bike Carrier
    You would not want to open the trunk while a trunk mounted bike rack is installed on your 2007 Chevrolet Impala because it could cause damage to the vehicle. If you would like to have access to your trunk without having to remove the bike rack every time, then I would recommend adding a hitch and hitch mounted bike rack. For your vehicle, I would recommend the Draw-Tite Class II Hitch, # 36407. There will be no contact between your vehicle and a hitch mounted bike rack and you will be...
    view full answer...
  • Recommended Trailer Hitch and Ball Mount for 2013 Chevy Impala to Tow a Utility Trailer
    For your 2013 Chevy Impala, I recommend the Curt Trailer Hitch Receiver - Custom Fit - Class II - 1-1/4" # C12252. This is a custom fit that will allow you to use the Curt Class II Drawbar # C45522 along with hitch ball # C40018 and pin/clip # F-4. If you need trailer wiring, I recommend the T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118417 which will plug into the factory harness located behind the passenger side tail light assembly. Then you will be able to...
    view full answer...
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