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

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

Item # 118717
Retail:$135.60
Our Price: $71.90
You Save: 47%
Custom Fit Vehicle Wiring

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Custom Fit Vehicle Wiring 118717 - 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. Powered ModuLite reduces strain on wiring system. 1-800-940-8924 to order Tekonsha custom fit vehicle wiring part number 118717 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 Connector. Custom Fit Vehicle Wiring reviews from real customers.
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  • Reviews (11)
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Tekonsha Custom Fit Vehicle Wiring - 118717

  • Custom Fit
  • 4 Flat
  • Trailer Hitch Wiring
  • Tekonsha
  • Powered 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. 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 behind tail lights
    • Plug in T-connector
    • Connect hot lead to car battery
  • Includes ModuLite to ensure that your vehicle's wiring matches that of your trailer
    • Powered module connects directly 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 behind the driver's-side and passenger's-side tail lights. You will have to remove the tail light assemblies to access this harness. Once you've plugged in the connector, run the red hot lead up to your car battery. Connect the included fuse holder, and then connect the fuse holder to the positive terminal on your battery.


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.


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.



118717 Tekonsha T-1 T-Connector - 4 Wire - Modu-Lite Converter Included

Installation Details 118717 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 Connector - 118717

Average Customer Rating:  4.9 out of 5 stars   (11 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:

Great kit. Easy installation and a professional looking result



by:
Ford Edge

Product worked like a charm. Hardest part is running all of the wiring. The instructions are pretty generic and don't offer advice on how to run the wire to the battery, or where to mount the black box. I used double sided tape and stuck it to the side post of the bumper. For the power wire, to avoid the hassle of removing all of the underbody plastics and wheel arches, I tucked the wire inside the edge of the underbody panels, while only removing the nuts along the edge inside the wheel well to tuck the wire behind the bolts, this way it will avoid the shocks, half shafts, and control arms during movement. To access the engine bay, at the top of the driver side wheel well is where the plastic lines the engine bay so you can snake it through there, which conveniently comes out right next to the battery.



by:
2016 BMW X1

This Tekonsha wiring harness worked great on my 2016 X1. It was very simple to install and performed perfectly right out of the box. I used it the day I installed it, driving almost 850 miles in two days through drenching rain and it was flawless. I combined it with a Draw-Tite Class III receiver and that combination did a perfect job.



by:

After one year - works great - was very easy to install with the detailed instructions!



by:

The follow-up and follow-through were impeccable! Amazing experience.



by:

Delivered as promised. Thanks



by:



by:
2016 BMW X1



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2017 BMW X1



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by:
2016 BMW X1


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

  • Weight Capacity for and Parts Needed to Tow with a 2017 BMW X1
    From what I could find online it looks like the towing capacity of your 2017 BMW X1 ranges from 1,023 lbs - 1,177 lbs depending on the exact model. You should be able to find specifics on this in your owner's manual as I couldn't locate one online. If you don't have your owner's manual or can't find the capacities then you can always contact your local dealer with your VIN for that capacity. The reason why the Curt Trailer Hitch Receiver # C13303 that you referenced has such a higher weight...
    view full answer...
    Image 1 for
  • Will this etrailer Hitch part # e93KR Work for a BMW 2017 X1 M Sport?
    That's a Great question! The etrailler- matte black - Trailer Hitch Receiver - Custom Fit- Class III - 2" part # e93KR will fit your 0217 BMW X1 Sport model perfectly. While they are very different than the standard models of the X1 the Sport offers a very similar installation. The difference is that you are going to remove a slightly larger section of that rear fascia. Instead of removing the smaller gray lower fascia you will remove the slightly larger black lower fascia area. If...
    view full answer...
  • Which Hitch Fits on a 2017 BMW X1 Sdrive with Front Wheel Drive
    Yes. The good news is that all of the hitches we have available for your 2017 BMW X1 will fit regardless of the drivetrain and trim options on your vehicle, so you've got several options to choose from. The hitch with the best ground clearance and the one that will give you everything you could need to tow a trailer or carry a bike rack is the Stealth Hitches # SH55VR, which comes with a ball mount/hitch ball combo, trailer wiring and a removable receiver for accessories. The Stealth...
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    Image 1 for
  • Trailer Hitch Recommendation for a 2016 BMW X1
    Yes, we checked with Curt and they have confirmed their hitch part # C13303 as a fit for your 2016 BMW X1 so it would fit and work well on yours. If you wanted to do some towing you might be interested in etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with a 3/4 inch rise or 2 inch drop and one with a 2-3/4 inch rise or 4 inch drop. It also includes a 1-7/8 inch ball, 2 inch ball, hitch pin with clip, and a storage bag. If the ball mount kit does not include a ball...
    view full answer...
  • Will the T-One # 118717 Wiring Kit Fit a 2018 BMW X1
    The T-One # 118717 that you referenced is only confirmed to fit a BMW X1 from 2016 - 2017. I spoke with my contact at Tekonsha and he said that as of yet (September 2018) they haven't been able to get a 2018 X1 in to confirm a fit or not so as of right now the universal kits are what you will need to use for a guaranteed fit. The ZCI Circuit Protected Kit # 119250KIT will work for you without splicing into your vehicle's wiring, it basically clamps onto your existing wiring.
    view full answer...
  • Can a 2016 BMW X1 Tow 3,500 Lbs with the Curt Hitch C13303
    The Curt Trailer Hitch Receiver part # C13303 which is a fit for a 2016 BMW X1 (All Models) has a gross trailer weight rating of 3,500 lbs which is the most the trailer can weigh. That said, trailer hitches are tested separate of the vehicle so if the vehicle is rated lower you'll need to abide by this figure. For example, if the vehicle only has a 1,500 lb towing capacity (confirm in owner's manual) then that is the most the trailer can weigh regardless of the trailer hitch. In order...
    view full answer...
  • Will Curt Trailer Hitch Interfere with Foot Activated Liftgate on a 2016 BMW X1
    For your 2016 BMW X1 the Curt hitch part # C13303 has been confirmed as a fit and would work well. The hands-free liftgate will still function on your vehicle but the worse case scenario is that you may have to aim your foot to either side of the hitch opening. If you plan on doing some towing I recommend etrailer ball mount kit # EBMK4. It comes with a ball mount with a 2-3/4 inch rise or 4 inch drop, interchangeable ball set, hitch pin with clip, and a storage bag. If the ball mount...
    view full answer...
  • Trailer Hitch and Wiring Recommendations for a 2015 BMW X1
    On Both the Curt trailer hitch # C13140 and Draw-Tite hitch # 75761 the faces of the receivers are just about flush with the rear of the vehicle. Take a look at the installation videos I have linked so you can see how each hitch looks on a 2015 BMW X1. Please note that the trailer hitches only fit models of the 2015 BMW X1 that have the panoramic sunroof. If you plan on doing some towing I recommend etrailer ball mount kit # EBMK4. It comes with a ball mount with a 2-3/4 inch rise or...
    view full answer...
  • Recommended Trailer Hitch, Wiring, and Ball Mount for 2016 BMW X1
    For your 2016 BMW X1, I recommend the Curt Trailer Hitch Receiver - Custom Fit - Class III - 2" # C13303. The towing capacity of your vehicle is rated at 3,700 lbs, so that is the maximum weight you can tow. This will work for your boat, jet ski, and bikes. For your wiring, I recommend the T-One Vehicle Wiring Harness with 4-Pole Flat Connector # 118717 which will be plug and play. Then you can use the Curt Towing Starter Kit for 2" Hitches - 2" Ball - 3/4" Rise, 2" Drop - 7.5K #...
    view full answer...
  • Recommended Trailer Hitch and Towing Components for 2017 BMW X1 Towing Motorcycle
    For your 2017 BMW X1, I recommend the Curt Trailer Hitch Receiver - Custom Fit - Class III - 2" # C13303 which is a confirmed fit and will have a hidden crossbeam. It has a very durable gloss black finish to prevent rust and corrosion. Then I recommend the T-One Vehicle Wiring Harness with 4-Pole Flat Connector # 118717 for your trailer wiring harness. This custom harness will connect to your factory wiring harness behind your tail lights and then draw power directly from your vehicle...
    view full answer...
  • Trailer Hitch Recommendation for a 2016 BMW X1
    Actually for the 2016 BMW the Curt hitch part # C13303 is the recommended hitch that you referenced. This hitch is confirmed as a fit for the redesigned 2016 model. For trailer wiring you would then want the T-One Vehicle Wiring Harness with 4-Pole Flat Connector # 118717 If you wanted to do some towing you might be interested in etrailer ball mount kit # 989900. It comes with 2 ball mounts; one with a 3/4 inch rise or 2 inch drop and one with a 2-3/4 inch rise or 4 inch drop. It also...
    view full answer...
  • Will Draw-Tite Trailer Hitch Interfere with Hands-Free lift Gate on a 2017 BMW X1
    While it is unlikely that etrailer trailer hitch # e93KR will interfere with the hands-free hatch sensors on your 2017 BMW X1 there is still the possibility that it will limit functionality of it. This means that the range the sensors can see can be reduced. If you plan on doing some towing I recommend etrailer ball mount kit # EBMK4. It comes with a ball mount with a 2-3/4 inch rise or 4 inch drop, interchangeable ball set, hitch pin with clip, and a storage bag. If the ball mount kit...
    view full answer...
  • Towing Capacity of 2017 BMW X1
    The towing capacity of a 2017 BMW X1 is between 1,023 and 1,177 lbs here in the USA. Vehicles in other countries will typically have higher towing capacities than here since the US is a bit more cautious with towing for a lack of a better term. The Curt hitch part # C13303 is a fit for your vehicle and has more capacity than you'd need as well. For trailer wiring then you'd want the easy to install and reliable # 118717 which I attached an install video for. Since you wanted to do some...
    view full answer...
  • Recommended Curt Trailer Hitch and Towing Components for 2016 BMW X1
    For your 2016 BMW X1, I the Curt Trailer Hitch Receiver - Custom Fit - Class III - 2" # C13303 is a confirmed fit. For any non-trailer loads, Curt requires use of a stabilizing strap # 18050. If you don't want to be concerned with that, I recommend the etrailer Trailer Hitch Receiver - Custom Fit - Matte Black Finish - Class III - 2" # e93KR which is rated for higher capacities and does not require a stabilization strap for bike racks or other accessories. For your trailer wiring, I...
    view full answer...
  • Trailer Wiring Recommendation for 2014 BMW X1
    I have trailer wiring that is a confirmed fit for your 2014 BMW X1, but the # 118717 is not a fit so I can't recommend it for you. The universal wiring kit part # 119250KIT is a confirmed fit and would be a great option. I attached an install video for this for you to check out as well.
    view full answer...
  • What Type Of Power Module Is In The Tekonsha T-One Harness # 118717?
    The Tekonsha T-One Vehicle Wiring Harness # 118717 for your 2017 BMW X1 uses a ModuLite HD protector module. This module reduces strain on your vehicle wiring harness by sending power to the trailer connector directly from the battery rather than pulling power through the factory harness.
    view full answer...

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


Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
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 Shane H
Test Fit:
Shane H
Employee Michael B
Video by:
Michael B

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