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  1. Custom Fit Vehicle Wiring
  2. Tekonsha
  3. 4 Flat
  4. No Tow Package
  5. Trailer Hitch Wiring
  6. Vehicle End Connector
THIS ITEM IS NOT A FIT FOR
1990 Ford Taurus
Tekonsha

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

Part Number: 118678
In Stock
$51.25
Retail:$87.11
You Save: 41%
Custom Fit Vehicle Wiring
Not Confirmed to Fit

1990 Ford Taurus

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T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector Plug-In 118678
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In Use/Installed

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. 1-800-940-8924 to order Tekonsha custom fit vehicle wiring part number 118678 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.
  • All Info
  • Reviews (1)
  • Q & A (0)
  • Videos (2)
  • Photos

Tekonsha Custom Fit Vehicle Wiring - 118678

  • 4 Flat
  • No Tow Package
  • Trailer Hitch Wiring
  • Vehicle End Connector
  • Plug-In
  • Tekonsha
  • Plug and Lead
  • Powered Converter
  • Hidden

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
    • Locate connection points in rear cargo area
    • Plug in T-connector
    • Run hot lead to car battery
  • Includes ModuLite power converter to ensure that your vehicle's wiring matches that of your trailer
    • Powered module connects 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: 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 in your rear cargo area on both the driver's side and the passenger's side. You will have to remove the rear threshold plate and trunk liner to access this harness. Once you've plugged in the T-connector, run the hot lead up to your car battery. Connect the lead to the included fuse holder, and then connect the fuse holder to the positive terminal on your battery and insert the provided fuse.


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


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.



118678 Tekonsha T-1 T-Connector - 4 Wire - Modu-Lite Converter Included

Installation Details 118678 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 T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector-118678 Feature Review

Today, we're going to be taking a look at the T-1 vehicle YN harness with 4-pull flat trailer connector. This product is going to fit certain years and models of the Hyundai Elantra. It's going to provide your 4 way flat trailer connector at the back of your vehicle to power your trailer's signal lights. This is compatible of 5 pull, 6 pull, and 7 pull adapters. Adapters are sold separately. It's going to come with a dust cap for the 4 to 5 connector, that way you can cover up the connection points when plug's not being used. The black box on unit is going to be the included modulate. This is a power converter that's going to ensure that your vehicle's 00:00:30 matches that of your trailers. The power module's going to connect directly to the vehicle battery through the wiring, and that's going to help overloading the vehicle's electrical system. One of the main benefits of this system besides providing your 4-way flat connector at the back of the vehicle, is how quickly and easily it's designed to install. It's going to come with very detailed installation instructions, those are going to help walk you through the installation process, step by step. Basically to begin, you'll need to locate the connection points in your rear cargo area, and then you're going to have 00:01:00 2 sets of connectors.

The set with the yellow side's going to go to the driver side of your vehicle. The set with he green and red sides are going to go to the passenger. This is a custom fit vehicle wiring harness, so these plugs are going to match up perfectly with the ports on the vehicle. They're going to plug into one another and snap-lock together for a nice, tight, secure fit. After you get those connected, you'll need to make a ground connection. That's going to be your white wire with the ring terminal attached to it. You want to get that grounded to a nice, clean, metal surface, using the included grounding screw. Then you can go a head and mount your converter box.

Your converter box can be mounted using the double-sided 00:01:30 adhesive tape that's provided with the kit. The you'll need to run the hot lead to the vehicle battery. The hot lead is going to be the black wire right here, coming out of the black box. That's going to get connected to the bundled black wire with one of the included butt-connectors. The other end of the black wire runs to the vehicle battery, gets another butt-connector attached to it, and gets connected to one half of the fuse holder, which is this this yellow piece right here. The other half of the cheese holder gets a ring terminal attached, and that's going to get attached to the positive post on the vehicle battery. It does come with your 15-amp 00:02:00 fuse to get installed in there, and it's got the fuse cap to keep it safe and secure. Once you have all that done, you can go ahead and secure any excess or slack in your wiring with the included zip-ties.

Once your install is complete, the 4-way connectors are going to be stowed within your rear cargo area. When it comes to the maximum amp-age for the stop and turn lights, we're looking at 4.2 amps per circuit, for the tail lights, we're looking at 7.5 amps per circuit, and it's also recommended that you use a small amount of dielectric grease on all of your electrical connections, like the plugs on your vehicle, and the 4-pull connector itself 00:02:30. That's really going to help prevent corrosion. That is sold separately, so if you need some, you can find it right here at etrailer.com. I did mention that this is a vehicle specific wiring harness, so you can see here, all the areas where we have wiring bundled up together. Don't worry about not having enough wiring. It's going to reach perfectly, it's going to give you plenty of wiring to make your connections here at the T-connectors, it's going to give you plenty of wiring to extend this out the back of your vehicle and make your connection to whatever it is you're towing behind you. It's going to give you plenty of wiring right here, 00:03:00 to reach from the back of the vehicle to the vehicle battery. That's going to do it for today's look at the T-1 vehicle wiring and harness with the 4-pull flat trailer connector..

Ratings & Reviews

5.0

1 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:

It was a great investment for my business. I started doing Lawn and Landscape work and I didn’t have a truck yet. The installation and wiring harness were step by step in a video.


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Info for this part was:

Employee Andrew K
Video by:
Andrew K
Employee Lindsey S
Edited by:
Lindsey S
Employee Jacob T
Video Edited:
Jacob T
Employee Cole B
Installed by:
Cole B
Employee Wilson B
Updated by:
Wilson B
Employee Isabelle B
Updated by:
Isabelle B
Employee Alexander C
Written by:
Alexander C
Employee Brent H
Test Fit:
Brent H

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