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 # 118512
lowest price pledge
Retail:$53.41
Our Price: $17.51
You Save: 67%
Custom Fit Vehicle Wiring

Will this fit?

To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

Orders above $99 qualify for Free Shipping
Shipping Weight: 0.68 lbs
Quantity: 
In Stock, Ships Today
118512 - Custom Fit Tekonsha Trailer Hitch Wiring
zoom in icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

In Use/Installed

Customer Photos

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. Call 800-298-8924 to order Tekonsha custom fit vehicle wiring part number 118512 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 (56)
  • Q & A (7)
  • Videos (3)
  • Photos
  • Why etrailer?

Tekonsha Custom Fit Vehicle Wiring - 118512

  • Custom Fit
  • Trailer Hitch Wiring
  • Tekonsha
  • 4 Flat
  • No 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 - 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 - no cutting or splicing of wires
    • Locate connection points in trunk
    • 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 inside your trunk, behind the tail lights on both the driver's side and passenger's side. You will need to remove some interior trim or carpeting to access the harness.


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.



118512 Tow Ready T-1 T-Connector - 4 Wire

Installation Details 118512 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 Trailer Wiring Harness Installation - 2005 Chevrolet Impala

Today, on a 2005 Chevrolet Impala, we are going to install part number 118512 to be tow ready. The first thing we need to do is go ahead and open up the trunk and get access to the wiring harness. We will have to remove the interior panels and the threshold to get to it. First off, we are going to go ahead and remove the plastic rivets from our cover right here. Next, we are going to remove these 2 fasteners here and here. Now, we are going to remove this fastener right here and this fastener here and then we can go ahead and remove the taillight.

Next, we will disconnect the plug for the taillight. We will pull up on this tab right here and pull it apart. Now, we have the driver side done and now lets go over to the passenger side and do it one more time. Now, I can go ahead and start installing a wire harness. We will take the 4 pull end, drop them behind the bumper cover and out the bottom.

We will also do the same thing with the T-connecter of the green wire. Now, take your T-connector and plug it back into the factory wire harness and your other end will eventually go back to the taillight. Before we do that, we will go ahead and run our white wire to INAUDIBLEterminal to sheet metal for ground. Now, we can go ahead and reinstall the taillight. At this point, we can go ahead and start reinstalling the interior on this side.

Now, take a wire harness with a 4 pull and run it over to the center of the hitch. We are going to run it inside the bumper structure behind the bumper brackets. Now, we are going to leave that alone for now and we are going to go ahead and do the same thing with a T-connector and a green wire. We are going to run that all the way across. Now, we can go ahead and route it up towards the taillight.

We will take our wire harness and plug it into the factory harness and then we will plug this into the taillight. Now, we will go ahead and take a few minutes to go ahead and zip tie our wires to keep them safe and secure and out of the way. With all of our wire zip tied, we are ready to go and that will finish it for our install of part number 118512 from Tow Ready on our 2005 Chevrolet Impala.


Customer Reviews

T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector - 118512

Average Customer Rating:  4.9 out of 5 stars   (56 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.

- 118512
by:

Just as advertised extremely fast shipping by with confidence 747383



- 118512
by:
2004 Chevrolet Impala

Easy install. Perfect fit 710769



- 118512
by:

Arrived on time. Fit great. However a bit extra wire than needed, no big deal, better than to short. 698942



- 118512
by:

A little longer than it needed to be, but I bunched up the excess with zoo strips under the frame and all is well. No issues with regular use. 577934



- 118512
by:
2010 Chevrolet Impala

This product works great and it was super easy to install. I have an 03 Impala and it only took me less than 10 minutes. Hope this helps. 575166



- 118512
by:
2002 Chevrolet Impala

Very easy plug and play!!! Every thing hooks up like the instructions say. I have another car Im going to wire and will definitely use etrailer. fast shipping add guaranteed. 558855



- 118512
by:
2015 Chevrolet Impala

Super easy to put on. It plugged right into the factory wiring harness and works great. It only took me about 15 minutes to install. I would recommend to anybody. This was on a 2002 Chevy impala ls. 521579



- 118512
by:
2004 Chevrolet Impala

Great.....plug and go, sure better than stripping and splicing. 515279



- 118512
by:
2001 Chevrolet Impala

Easily installed and works perfectly. 499952



- 118512
by:

Easy to install and works great. 481214



- 118512
by:

I am extremely pleased with the trailer hitch package I received from Etrailer, as well as with the speed of delivery! The hitch fit perfectly, and the online installation video was very helpful. Thank you for a terrific online ordering experience! 468155



- 118512
by:
2003 Chevrolet Impala

Third hitch & wiring set that I bought from etrailer. I found them to be of good quality, and have stood up to use over several years. Prompt shipping. Recommend 412947



- 118512
by:

etrailer.com was recommended to us by our mechanic for your excellent customer service and quality of hitches. My order arrived in 3 days, as promised. Our mechanic installed it for us. We are very pleased with it and would recommend it to everyone. 404172



- 118512
by:

Easy instructions for installation. Easy done, works fine. 395099



- 118512
by:
2001 Chevrolet Impala

I had a hard time getting this . I was so pleased I was able to purchase it here for a great price. Will definitely buy more product from etrailer. 373483



- 118512
by:

Not satisfied 362809



- 118512
by:
2002 Chevrolet Impala

One of the determining factors for my purchase of the Drawtite hitch was the installation video that was provided from etrailer. The install was easy, mirrored the video, with no surprises. The hitch fit perfectly with no fitment issues whatsoever. 326114



- 118512
by:
2001 Chevrolet Impala

Very pleased with the wiring harness. It only took five minutes to install. 302128



- 118512
by:
2005 Chevrolet Impala

Still works great 271042



- 118512
by:
2004 Chevrolet Impala

I purchased this product for my 2004 Chevy Impala to tie into the lights on my small boat trailer. The plug-in features of this item make it very easy to install and impossible to make a mistake on what wires go where. It takes all the guess work out of wire connections. After installing the unit, I found that the receiver plug did not match up to the connector on the trailer. I think this was due to the age of the connector on the trailer and was in no way due to any defect in workmanship on the new plug. An auto parts store outfitted me with the new connector end for the trailer and after splicing it to the trailer harness, this issue was resolved and the lights worked as expected. 261651



- 118512
by:
2002 Chevrolet Impala

Could never been any easier!!!! 234714



- 118512
by:

Great Product. Fast Delivery! 231935



- 118512
by:
2005 Chevrolet Impala

Ordered and received in less than a week,hitch was for my 05 impala fit just described and took less than 45 min to install 221538



- 118512
by:
2005 Chevrolet Impala

Ordered and received in less than a week,hitch was for my 05 impala fit just described and took less than 45 min to install 221537



- 118512
by:
Chevrolet Impala

fast shipping, great product. I buy all of my items that I need for towing at etrailer, never had a bad experience yet. 201375


25
58
Show More Reviews

Ask the Experts about this Tekonsha Custom Fit Vehicle Wiring

  • Is There a T-Connector Wiring Harness for a 2001 Chevrolet Impala
    The plug-in style trailer wiring harness that I recommend for your 2001 Chevrolet Impala is the Tow Ready T-One Trailer Wiring Harness, # 118512. We have installed this on an Impala, so I attached a link to the installation video for you to check out. I have also attached a link to the installation instructions.
    view full answer...
  • 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...
    view full answer...
  • How to Transport Bikes and Tow a Trailer with 2005 Chevy Impala
    If you need to tow a trailer and transport bikes with your 2005 Chevy Impala you are going to need to go with a roof rack for the bikes and a trailer hitch for the trailer. There are some options to tow a trailer and carry a hitch bike rack, but they require a heavier duty hitch than what would fit your Impala. For a trailer hitch you would want the Draw-Tite part # 36407 which has been confirmed as a fit. You will need ball mount part # 36061. For a 2 inch ball you would need part #...
    view full answer...
  • Recommendations for Carrying Rascal Mobility Scooter With Hitch Mounted Carrier on 2000 Chevy Impala
    Although we don't offer a hitch mounted carrier that would be compatible with the hitches available for your vehicle, we do offer a small utility trailer that would be ideal. I recommend using # K2MMT5X7. For a hitch, I recommend the Draw-Tite Classs II hitch, part # 36407. To complete your towing system, you also need the following: Ball mount, part # 36061 2 inch trailer ball, part # 19258 Trailer wiring harness, part # 118512
    view full answer...
  • Parts Needed to Tow Boat Trailer with 2005 Chevy Impala
    We have everything need to get your 2005 Chevy Impala set up for towing a small boat trailer. Starting with the trailer hitch, the Draw-Tite Class I Sport Frame Receiver Hitch # 24681 that you referenced is confirmed to fit your vehicle, but I actually recommend going with the Draw-Tite Class II Hitch # 36407 instead. The Class II hitch just gives you a stronger unit and will make it easier to find compatible accessories down the line (such as bike racks and cargo carriers) if you ever...
    view full answer...
  • Parts Needed to Tow a Trailer with a 2005 Chevrolet Impala
    I do have an option for you but your 2005 Chevrolet Impala would not be rated for anywhere near the tongue weight you would need for a cargo carrier and 370 lb wheelchair. The tongue weight capacity of your vehicle is likely between 100-150 lbs but you can verify this in your owner's manual. The only way that you would be able to safety haul around the wheelchair would be with a small utility trailer like the Detail K2 Mighty Multi Utility Trailer part # K2MMT4X6. In order to haul this...
    view full answer...
  • How Much of Trailer Hitch # 36407 is Visible Once Installed on a 2000 Chevy Impala
    Based on the pictures that are on the product page (the last 2 show it the best), and the image in the upper left corner of the instructions that I have linked, the receiver will be the only part of the hitch easily visible once installed on your 2000 Chevy Impala. If you plan to do some towing the recommended ball mount is # 36061 for use with ball # 19256 (1-7/8 inch diameter) or # 19258 (2 inch diameter). For trailer wiring, you would use T-One Vehicle Wiring Harness with 4 Pole Trailer...
    view full answer...

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




  • Why etrailer.com?

    At etrailer.com we guarantee:
  • Highest quality custom fit vehicle wiring for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate custom fit vehicle wiring information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Test Fit:
Joe V
Test Fit:
Nicholas E
Video Edited:
Zack K
Updated by:
Adele M
Updated by:
Laura H
Updated by:
Sarah W
Updated by:
Alexander C
Updated by:
Isabelle B
Installed by:
Cole B

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.