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

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

Item # 118660
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Our Price: $59.94
Custom Fit Vehicle Wiring

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118660 - 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. Powered ModuLite reduces strain on wiring system. 1-833-496-1390 to order Tekonsha custom fit vehicle wiring part number 118660 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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  • Reviews (195)
  • Q & A (0)
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  • Why etrailer?

Tekonsha Custom Fit Vehicle Wiring - 118660

  • Custom Fit
  • Trailer Hitch Wiring
  • 4 Flat
  • 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. 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
    • Locate connection points in rear cargo area
    • Plug in T-connectors
  • Includes ModuLite to ensure that your vehicle's wiring matches that of your trailer
    • Powered module pulls power from 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: 4.2 amps per circuit
    • Tail lights: 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 rear cargo area, behind the tail lights on both the driver's side and passenger's side. You will need to remove the rear threshold panel and some interior trim to access the harness.


Once you've plugged in the T-connector, find the 1-pin housing that is taped to the tail light harness on the driver's side and plug in the 1-pin connector on the T-One. Locate the fuse box under the hood of your vehicle and insert the provided 15-amp fuse into the 30A location.


Once installation is complete, the 4-way flat connector will be stowed in your cargo area when not in use.


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.


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.



118660 Tow Ready T-1 T-Connector - 4 Wire - Modu-Lite

Installation Details 118660 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 - 118660

Average Customer Rating:  4.8 out of 5 stars   (195 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. Powered ModuLite reduces strain on wiring system.

by:
2018 Nissan Murano

Great service, got the wiring harness very quickly, easy to install. Etrailer was very good about tracking the order to make sure I received it.




by:

Easy to install and works great. I have had no problems or issues. Etrailer customer service is excellent. Very helpful and knowledgeable. I will use them again.




by:

I am so impressed, I called Emily M. at etrailer customer service on Thursday Oct. 22 and ordered a hitch for our Nissan Murano. It was delivered to our home in Fl. on Oct 23. WOW what service.
It took me only one hour to unpack the hitch and install it. Did it myself.
Thank you Emily and etrailer for the great service!!!
Now on to the wiring harness


Comments
I installed the hitch to tow a small trailer from FL. to MN. but did not do. So have not used it yet. The wiring harness was also very easy to install. The vidios were very helpful.
Don K - 10/28/2021


by:

Wasted my time and money. The Level of aggravation received through customer service is just not worth it. I threw it all in a trash. They sent me the wrong mounting bolts, I requested new mounting bolts by their packing number as on the instructions. After several emails and a couple phone calls The woman sent me the same wrong bolts . This carried on for 2 months. I threw it all in the trash and haven't done business with etrailer since.




by:
2015 Nissan Murano

We bought this hitch for our 2015 Murano to use for a bike carrier and occasionally pulling a trailer. Installed it and the wiring harness yesterday. It took about two hours total. Very easy install. I had expected it to be more difficult. Balanced the hitch on a gallon paint can to get the first bolts in after that just a matter of installing the rest of the bolts and torquing everything down. Wiring harness was and easy install also. Plug and play after removing a few panels. Easy install with just a screwdriver, torque wrench and razor blade. Seems lake a great product. Fits our car very well. We will lose some rear clearance but I don't think it will be an issue.




by:

I have used my hitch and wiring harness several times and I couldn't be happier. Whether I am towing my utility trailer or my travel trailer , I am confident with this setup.




by:

Finding the correct harness for my vehicle was easy on the website. Installation was also straight-forward after following the helpful video provided by etrailer. The harness worked as expected once I got a clean ground contact to bare metal. My initial install attempt used a threaded mounting hole on my frame that had been painted, which was enough to prevent the electrical connection. Would definitely buy from trailer again.




by:

Works like a charm. No issues, very easy to install and a year later it's still as great as the first day.




by:

Easy install and it only took 30 minutes. Only issue was the extra 15 amp fuse that came with the harness connector was different from the 30 amp in the engine bay. The 15 amp was longer on the prongs that plug in.




by:

Awesome!! Easy to install!! It works great, and looks good too!!


Comments
Works great!!!!
Belinda B - 05/24/2022


by:

Exceptional installation video. Product is as described.




by:

Ordered my hitch and wiring harness on a Tuesday and my order was delivered on Thursday, looks good! Watched the install video, should be easy and wiring video looked good also! Thanks


Comments
Works well!!
Paul - 04/17/2021


by:

Easy installation and product works gre at!




by:

Plugged directly in to cars harness with now issues




by:

Well produced instructions. Took some time but not too bad for first time install. I installed in anticipation of possibly towing something bit without any definitive towing plans. So as of yet, I haven't used the wiring harness.




by:

You make it too easy!




by:

This wiring harness works well. It was quick and easy to install thanks to the video on the site. The only reason I didn’t give it 5 stars is because I would prefer to have it permanently on the outside. Having said that, it stays clean an causes no problem running the flat wire thru the hatch when needed. Always out of sight when not in use. So, there are advantages.




by:

Good install worked Great Thanks




by:

Excellent service




by:
2017 Nissan Murano

Timely delivery. Perfect fit for my 2017 Murano. Connection instructions for the wiring harness were easy to follow. Very satisfied.


Comments
Excellent. No issues. Totally satisfied.
Veikko J - 03/05/2021


by:
2016 Cadillac SRX

Second time buying from etrailer. Great price, delivery, and product. Will be back




by:
2015 Nissan Murano

DIDN'T HAVE TO READ THE DIRECTIONS after watching the E Trailer video. I connected the clips to the correct colors temporarily grounded the wiring harness and all lights checked out on my meter in about 12 minutes. I did spend 15 additional minutes extending the ground wire to find a perfect ground location and some additional time hiding the wires and installing many wire ties. Very easy install thanks to E Trailer videos. Very fast shipment as well.


Comments
A year later...I still love your products and your terrific customer service.
S. F - 09/25/2017


by:
2021 Nissan Murano

Well constructed. Outstanding videos to simplify the installation.

I am not normally easy to impress, but...these guys are the real deal and fantastic pricing. I highly recommend




by:

Perfect fit, missing double sided tape. Took about 10 minutes to install.




by:
2017 Nissan Murano

I purchased a Draw-tite receiver hitch and the trailer wiring kit for my 2017 Murano. I was very impressed with these products as to the simplicity of the installation of both items. Very top shelf equipment. I will definitely be purchasing more equipment from etrailer. Thanks for making it so easy. Skip R.


Comments
Very good, I use a trailer quite often
skip R - 10/24/2018

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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Lindsey S
Written by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Joshua S
Video Edited:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
Video Edited:
Chris R
Employee Nicholas E
Test Fit:
Nicholas E
Employee Shane H
Test Fit:
Shane H
Employee Ryan G
Test Fit:
Ryan G
Employee Kathleen M
Video by:
Kathleen M
Employee Jonathan Y
Video by:
Jonathan Y
Employee Laura H
Updated by:
Laura H
Employee Wilson B
Updated by:
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Employee Alexander C
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