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

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

Item # 118415
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Custom Fit Vehicle Wiring

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118415 - Custom Fit Tekonsha Custom Fit Vehicle 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 - no cutting, splicing or tapping required. Circuit-protected converter guards against shorts. Call 800-298-8924 to order Tekonsha custom fit vehicle wiring part number 118415 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 (174)
  • Q & A (79)
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  • Why etrailer?

Tekonsha Custom Fit Vehicle Wiring - 118415

  • Custom Fit
  • Trailer Hitch Wiring
  • Tekonsha
  • 4 Flat
  • 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. Circuit-protected converter guards against shorts.


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 rear cargo area
    • Plug in T-connector
  • Includes circuit-protected tail light converter to ensure that your vehicle's wiring matches that of your trailer
    • Provides protection against electrical shorts and overloads
  • Constructed of 16-gauge bonded wire
  • Comes with dust cap for 4-way flat connector


Specs:

  • Maximum amperage:
    • Stop/turn lights: 2.1 amps per circuit
    • Tail lights: 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 interior trim panels in your rear cargo area.


Once installation is complete, the 4-way flat connector will be stowed within your trunk or 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.


Circuit-Protected Tail Light Converter

A tail light converter 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. The tail light converter combines 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.


This converter safeguards itself and your vehicle against possible electrical shorts and overloads with integrated short circuit protection. Just install the connector as indicated and rest assured that the wiring system of your vehicle will remain feedback-free.



118415 Tow Ready T-1 T-Connector - 4 Wire

Installation Details 118415 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 - 118415

Average Customer Rating:  4.9 out of 5 stars   (174 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. Circuit-protected converter guards against shorts.

- 118415
by:

Wiring harness fit exactly as is should. Easy install and worked perfectly. 749168



- 118415
by: 10/25/2020

Working great one year later 903777



- 118415
by:

Fast shipping, easy installation. Works great! 875538



- 118415
by:

This is still working perfectly and was relatively easy to install. 837136



- 118415
by:
2010 Hyundai Santa Fe

everything came in one large box in excellent shape very good products 829013



- 118415
by:
2008 Hyundai Santa Fe

This installed easily, just followed the excellent video. It also worked of course and got power to my trailer lights. Excellent product/service/instructions all around, thank you! Well, well worth the reasonable cost. 827971



- 118415
by:

Super easy to install. Directions were accurate and the videos very helpful. 816859



- 118415
by:

Fit perfect easy to install. Remove 3 10mm screws from spare tire tool compartment, remove side access to tail light area. Fish wires with factory connections and plug them in white connectors. Took about 20 minutes. 764120



- 118415
by:

Excellent quality. Installation was simple. Shipping was prompt. Absolutely no complaints. I’ll be using etrailer again!! Thank you! 745501



- 118415
by:

Excellent quality. Installation was simple. Shipping was prompt. Absolutely no complaints. I’ll be using etrailer again!! Thank you! 745500



- 118415
by:
2010 Hyundai Santa Fe

Looks great! It is to cold to install it right now. Will install on next warm day and give you some feedback! 729575



- 118415
by:

what we needed at good price 671477



- 118415
by:

Proverbial piece of cake. Works like a champ. It took me 30 minutes to install because it took 25 minutes to find my drill. Great! 647987



- 118415
by:

Recieved my trailer wire kit the other day read the instructions which are the best I have seen. Today I installed the kit on my sante fe super easy ! Took more time to remove the interior panels then hooking up the wires. I recommend this product for anyone needing trailer wiring!! 633692



- 118415
by:

Easy to install, great instructions. 607597



- 118415
by:

Order arrived on time as scheduled. It was super easy to install and works perfectly! 605369



- 118415
by:

Does what it’s supposed to do 604980



- 118415
by:
2010 Hyundai Santa Fe

Installed on a 2010 Hyundai Santa fe. It was really easy to install. It took about an hour to do but then I was taking my time with it. This could probably be done in about a half hour. 582239



- 118415
by:
2012 Hyundai Santa Fe

straight forward easy installation. 569602



- 118415
by:

Fit like a charm. fast shipping, no pro blems! 551144



- 118415
by:
2016 Lexus NX 200t

Perfect product, easy to install, and shipped fast to Winnipeg. Many thanks for your video guides on YouTube. It made all the difference and saved me a ton of cash. 514661



- 118415
by:
2010 Kia Forte

The harness seems to be put together well there was plenty of wire to make it to the proper plugs in the trunk area. The directions were good. the unit was easy to plug into the left and right side tail light assembles. and it worked well. 512677



- 118415
by:
2007 Hyundai Santa Fe

Excellent Customer Service and Product !!! Etrailer Customer Service Team verified that product would be a direct fit and shipped quickly. Product arrived in excellent condition. Installation instructions and videos were accurate and easy to follow. Wiring harness installed quickly and with no problems. Excellent product!!! Excellent Customer Support!!! 493991



- 118415
by:
2009 Hyundai Santa Fe

Good product , good price, install went well, diy videos are great. Thanks. 492470



- 118415
by:

Fit perfectly, if the car was rust free probably would have been finished in about an hour. Properly packaged and received in perfect condition relatively quickly. 483388


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Ask the Experts about this Tekonsha Custom Fit Vehicle Wiring

  • Knowing Which Wiring Harness to Use with a 2008 Hyundai Santa Fe
    Either part # 118415 or C56078 will work with all 2008 Hyundai Santa Fe models. They would plug inline with the wiring harness feeding the tail light assemblies on either side of the vehicle. The Tow Ready has a slightly higher amperage rating, but other than that both wiring harnesses are very similar. I have provided links to the install details for both harnesses, as well as an install video showing the # 118415 being installed on a 2008 Santa Fe.
    view full answer...
  • Wiring Harness Recommendation for a 2007 Hyundai Sante Fe
    There are two wiring harnesses available for the 2007 Hyundai Santa Fe, but one of the harnesses, # 118258 is a replacement harness for vehicles that came with the OEM tow package wiring, so it will not work on vehicles that did not come with trailer wiring from the factory. If your vehicle did not come with trailer wiring, or you are not sure, the best option is to go with the T-One Wiring Harness, # 118415, which will work on the 2007 Hyundai Santa Fe whether or not it has the factory...
    view full answer...
  • How to Tell if a 2007 Hyundai Santa Fe Already has Trailer Wiring
    Check the rear of your 2007 Hyundai Santa Fe and see if there is already a 4-Way installed at the rear or if it is possibly sitting on the inside of your hatch area possibly under one of the panels. If you cannot find the 4-Way then you don't already have one installed. If you don't already have a 4-Way then odds are that you don't have the tow package and you would need the T-One # 118415. The T-One # 118258 is for if your Santa Fe came with the tow package and you are replacing your...
    view full answer...
  • Turn Signals are Not Working with the Tekonsha T-One # 118415 Installed on Tow Vehicle
    If you are just testing it by hooking up your trailer and watching the lights then what I recommend doing is using a Circuit Tester # 40376 to test the 4-Way flat connector on the Tekonsha T-One # 118415. This will help you to determine if the problem is on your trailer side or vehicle side. If the functions all work correctly when you are testing just the connector then the problem is on your trailer. If not, then you maye need a new # 118415 since it connects in-line with your tail lights. To...
    view full answer...
  • Which Trailer Wiring Harness should be used for a 2009 Hyundai Santa Fe Limited
    There are three wiring harnesses available for the 2009 Santa Fe. If your vehicle is equipped with the tow package, use part # 118258 that would plug into the the existing factory connector under the vehicle. If your Santa Fe was not equipped with the tow package, you can use either the Tow Ready # 118415 or the Curt # C56078. Either of these harnesses would connect inline with the factory harness behind each tail light assembly. I will link you to install instructions, as well as...
    view full answer...
  • Recommended 7-Way and Trailer Brake Controller for 2011 Hyundai Santa Fe with 4-Way Flat
    Since you already have the 4-way trailer connection, you will simply use the # ETBC7L kit along with the Curt Echo Wireless Trailer Brake Controller # C51180 and then no wiring under your dash is needed. This will allow you to safely transport your trailer with electric brakes. If you prefer to have a more traditional brake controller, then you will use # ETBC7 instead and then hardwire the controller of your choosing. I recommend the Prodigy P3 # 90195 for most applications because...
    view full answer...
  • Parts Needed to Install 7-Way Trailer Connector and Brake Controller in 2010 Hyundia Santa Fe
    We can help you with wiring for your 2010 Hyundai Santa Fe Sport so you can tow your camper that has a 7-way wiring set-up. If the car has no wiring at all you will need to start with a 4-pole harness # 118415 that is a simple plug-in installation at your Santa Fe's tail lights. You'll then add the 7-way installation kit # ETBC7 which provides both the 7-way connector you need and the other parts to install a brake controller. Campers with a 7-way type wiring set-up usually have electric...
    view full answer...
  • Parts Recommendation to Install a 7-way on a 2009 Hyundai Santa Fe
    On your 2009 Hyundai Santa Fe you will need to start with a 4-way, this will get converted to a 7-way. For that you would want the # 118415. I attached an install video for you to check out. Now if your camping trailer doesn't have trailer brakes all you would need is the part # 37185 and you would be good to go. You would plug the 4-way of the # 118415 into the 4-way of the # 37185. Now if your trailer has brakes you would instead need the part # ETBC7. This comes with everything...
    view full answer...
  • What Do the Connectors of the # 118415 Plug Into When Installing on Hyundai Santa Fe
    The reason the connection you mentioned wasn't shown in the attached video is because the factory connector that male side of the # 118415 plugs into is behind the panel of the vehicle which makes filming it difficult. Basically you will unplug the factory taillight harness of your vehicle and then will install the connectors of this harness in between them. You can see it better in the install instructions link I attached.
    view full answer...
  • Is Tow Ready Trailer Wiring Harness Difficult to Install on a 2013 Kia Forte
    The price for the Tow Ready trailer wiring harness part # 118415 is available at the link below. I attached an install video for this harness for you to check out. It's pretty easy to install. Basically you just plug the harness in line with the vehicle's taillight harness and you would be ready to go.
    view full answer...
  • Recommended Adapter to Convert 4-Pole Connector to 6-Pole on 2009 Hyundai Santa Fe
    To convert the 4 pole plug # 118415 on your 2009 Hyundai Santa Fe to a 6 pole that will connect to your trailer, you can use the Hopkins Adapter # 37175 if your trailer uses a round connector, which can simply be plugged into your existing 4-pole connector. If your trailer has a 6-way square connector, you will instead need to use the Hopkins 6-Pole Square Kit # 37995. For this you will actually need to hardwire the harness into your vehicle's 4-pole wires. The kit comes with both connection...
    view full answer...
  • Trailer Wiring Harness for 2013 Kia Forte Koup
    For the 2013 Kia Forte Koup, Curt recommends their Circuit Protected Taillight Converter, part # C56175. The # 118415 you referenced will only work with the sedan model, as the taillight assemblies differ between the sedan and koup model. The C56175 is not a vehicle specific item, and would require tapping directly into the taillight circuits of the vehicle. I have linked you to the installation details for the wiring harness. You would need to access the wiring harnesses feeding...
    view full answer...
  • Does the Custom Fit Vehicle Wiring for the 2010 Hyundia Santa Fe Provied Overload Protection
    Yes, the Tow Ready Custom Fit Vehicle Wiring for the 2010 Hyundai Santa Fe, item # 118415, is circuit protected. This means that if there is a short on the trailer the module will protect the vehicle circuitry. With the 118415 module the harness would need to be replaced in this situation. If you would like a converter that is circuit protected and can be reset in the event of a short circuit situation, you could use the Upgraded Heavy Duty Modulite Circuit Protected Vehicle Wiring Harness...
    view full answer...
  • Will The 24x60 Cargo Carrier E98874 Block the Tail Lights on a 2012 Hyundai Santa Fe
    The 24x60 etrailer.com Cargo Carrier part # E98874 is not too wide for your 2012 Hyundai Santa Fe. However, I believe what you may be concerned with is the cargo carrier blocking the tail lights while folded up. If that is the case then what you will want to do is measure outward 30" from the center of the trailer hitch. That will give you a good idea of where the edge of the basket will sit that way you can see if your tail light will be visible. The other option you have is to install...
    view full answer...
  • Picking Out Trailer Wiring and Brake Controller for 2012 Hyundai Santa Fe
    The connectors you found do look like the standard trailer wiring connectors that your 2012 Hyundai Santa Fe would have if it has the factory tow package. I would be inclined to believe that the install harness part # 118258 is what you'd need but you might test the pins of the connectors for voltage with a circuit tester like part # PTW2993 to be sure. Otherwise you'd need to start with a 4-way kit # 118415 which actually fits either way so it is a safe bet regardless. The # ETBC7...
    view full answer...
  • Why is Weight Capacity of Trailer Hitch Different Than Towing Weight for 2007 Hyundai Santa Fe
    The Draw-Tite Max-Frame Trailer Hitch Receiver # 75471 is a fit for your 2007 Hyundai Santa Fe and is the trailer hitch I'd recommend because of how clean it looks installed and it has the tab for a wiring connector bracket. Trailer hitch manufacturers test the strength of their products separate from the towing capacity of the vehicle. So while the Draw-Tite trailer hitch has been tested and approved for up to a 3,500 lb trailer and 525 lbs of tongue weight, since your Santa Fe has...
    view full answer...
  • Trailer Hitch and All Parts Needed to Tow With 2009 Hyundai Santa Fe
    We do carry all the parts you need to tow your trailer with your 2009 Hyundai Santa Fe, and the Draw-Tite Trailer Hitch # 75471, which has a 3,500 lb towing capacity and 525 lb tongue weight capacity will absolutely work for you to tow a trailer, including your 6' x 12' trailer. I have added a link to a video install of this hitch on a Santa Fe for you to take a look at. Another part you will need in order to tow a trailer is a wiring harness, which will give your Santa Fe a 4-flat connector;...
    view full answer...
  • Is LocTite Needed When Installing Draw-Tite Hitch on a 2007 Hyundai Santa Fe
    The Draw-Tite Max-Frame Trailer Hitch Receiver # 75471 comes with lock washers that you use for the install so LocTite isn't necessary or recommended by the manufacturer. You are correct, the tab to the left of the receiver is for mounting wiring like part # 118258 or # 118415 to your 2007 Hyundai Santa Fe with a bracket like part # 18144.
    view full answer...
  • Recommended Trailer Hitch and Wiring for 2011 Hyundai Santa Fe with Spare Tire Under Vehicle
    Both the Curt Class III Round Tube Receiver Hitch # C13073 and Draw-Tite Class III Max Frame Receiver Hitch # 75684 are confirmed to fit your 2011 Hyundai Santa Fe as long as it does not have the dual exhaust. Because of its cross tube design, the Curt Class III # C13073 is going to allow for easier access to the spare tire mounted under the vehicle. I have attached a couple of images so you can better see the comparison between the two hitches. The Curt Hitch is a great option for...
    view full answer...
  • Wiring Harness and Towing Setup Recommendation for a 2008 Hyundai Santa Fe
    If you do not have a tow package on your 2008 Hyundai Santa Fe, then you would have to contact a local Hyundai dealer to inquire about activating the tow package. There may be additional fuses and relays that would need to be installed by the dealership to activate the tow package. The trailer wiring harness, # 118258, that you referenced was designed for vehicles that came with the factory tow package. If the dealer is not able to activate your tow package, then you will want to use...
    view full answer...
  • Trailer Hitch and Wiring Recommendations for a 2011 Kia Forte
    Curt trailer hitch # C11124 for the 2011 Kia Forte Hatchback has a capacity of 2,000 pounds but you will need to determine the towing capacity of the vehicle by checking in the owners manual. If the combined weight of the trailer and trike when loaded and ready to tow exceeds 2,000 pounds or the capacity of the vehicle, whichever is lower, you will not be able to tow the bike and trailer with this vehicle. If you determine that you can, you will also need a properly sized ball (the hitch...
    view full answer...
  • Does 2007 Hyundai Santa Fe Spare Tire have to be Removed to Install Draw-Tite Trailer Hitch # 75471
    The spare tire on a 2007 Hyundai Santa Fe does not have to be removed to install or use the Draw-Tite Trailer Hitch, # 75471, provided that it is the factory spare and not a larger one that was added later. I have included a link to the installation instructions. You will see that installation of this hitch is a 2 step process. I have also included a link to a video showing a typical installation and it will be the same on your Santa Fe. You will see that put the hitch in place without...
    view full answer...
  • Trailer Wiring Recommendations for a 2011 Hyundai Santa Fe
    If your 2011 Hyundai Santa Fe does not have the tow package from the factory, you would need wiring harness # 118415. To be absolutely sure on whether or not the vehicle is so equipped, have the dealer run the VIN. They will be able to tell you what equipment it has with that information. As far as I have been able to find, the 2011 Hyundai Santa Fe, any model, was not equipped with a 7-Way. In order to add one, it would be a hardwire situation that would include adding a 4-Way first...
    view full answer...
  • Correct Trailer Wiring Harness for a 2011 or 2012 Hyundai Santa Fe with Towing Package
    At this time the correct choice for the 2012 Hyundia Santa Fe SE with towing package is the Draw-Tite custom fit wiring, # 118258. Draw-Tite has tested this harness on the 2011-2012 models and verified that it will work without issue. I have attached a link to the installation instructions for you to review also. You should verify, with a circuit tester, # 40376, that the connectors on your Santa Fe are fully functional before purchasing the tow package wiring harness. If one or more...
    view full answer...
  • Can the Draw-Tite # 75471 Trailer Hitch be Used to Carry a 400-lb Motorcycle with a 2009 Santa Fe
    The Draw-Tite Max-Frame Trailer Hitch Receiver # 75471 that you referenced does have a Tongue Weight (TW) rated for 525 lbs, but when I looked in an online version of the owner's manual for your 2009 Hyundai Santa Fe it said that the max TW is 350 lbs (with a 3.3L engine). Even though the trailer hitch is rated for more than your motorcycle weight, your Santa Fe is the limiting factor at 350 lbs max. You could cause damage to your motorcycle, hitch, Santa Fe, or other motorists if you...
    view full answer...
  • Hitch and Weight Distribution System Recommendation for 2010 Hyundai Santa Fe
    Your 2010 Hyundai Santa Fe can be equipped with either a 1-1/4-inch Class II or a 2-inch Class III hitch receiver, but only the Class III type can be used with weight distribution. The hitch you need for weight distribution is the Draw-Tite Max Frame # 75684. This hitch for your Santa Fe will work only on the versions without the dual exhausts. For a wiring harness you can use # 118415 if the car does not have the factory tow package or part # 118258 if it does. I have linked installation...
    view full answer...
  • Adapting a 4-Way Trailer Connector to a 7-Way on a 2012 Hyundai Santa Fe
    What you will need is a 4- to 7-Way adapter. Adapter # 47345 does the opposite and plugs into a vehicle side 7-Way connector. In order to add a 7-Way connector to your 2012 Hyundai Santa Fe you will need to first install the 4-Way. If your Santa Fe came with the factory tow package then # 118258 is correct. If it did not come with the factory tow package then you would need # 118415 instead. After the 4-Way is installed you can add the 4- to 7-Way adapter. There are a couple of ways...
    view full answer...
  • Can 2007 Hyundai Santa Fe Without Trailer Tow Package Tow a Camper?
    You can tow with a 2007 Hyundai Santa Fe, though according to the owner's manual, without the towing package you have a maximum towing capacity of 2,000 lbs. In order to tow with your Santa Fe, you would need a hitch, and I recommend the Draw-Tite # 75471, which has a bolt-on installation so no welding is going to be required. You would also need wiring to add a 4-way connector, the T-One Harness # 118415. I also checking out Ball Mount Kit # 989900, which may fulfill your towing needs...
    view full answer...
  • Will Installing Draw-Tite # 75684 on 2010 Hyundai Santa Fe Prevent Lowering of Spare Tire
    As you can see in the provided photo, installing the Draw-Tite Class III receiver on your 2010 Hyundai Santa Fe will somewhat obstruct the spare tire. You will still be able to deploy the spare tire if while lowering it, you push the edge of the tire toward the front of the vehicle until it clears the hitch. The hitch on my wifes van is obstructed in exactly the same manner, and I can tell you from experience that getting the spare lowered is no big deal. If you were planning...
    view full answer...




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Info for this part was:

Expert Research:
Mike L
Expert Research:
Robert G
Expert Research:
Jameson C
Expert Research:
Adam R
Video Edited:
Zack K
Video Edited:
Andrew K
Video Edited:
Patrick B
Video by:
Joshua S
Test Fit:
Nicholas E
Test Fit:
Rick A
Updated by:
Laura H
Updated by:
Sarah W
Updated by:
Alexander C
Updated by:
Isabelle B
Installed by:
Cole B

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