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  1. Custom Fit Vehicle Wiring
  2. Tekonsha
  3. Custom Fit
  4. Trailer Hitch Wiring
  5. 7 Round - Blade
  6. Powered Converter
THIS ITEM IS NOT A FIT FOR
1995 Jeep YJ

Tekonsha OEM Replacement Vehicle Wiring Harness with 7-Way Trailer Connector

Retail:$176.43
Our Price: $123.91
You Save: $52.52
Custom Fit Vehicle Wiring
Not Confirmed to Fit

1995 Jeep YJ

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Shipping Weight: 3 lbs
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Tekonsha OEM Replacement Vehicle Wiring Harness with 7-Way Trailer Connector Powered Converter 118290
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Replace the damaged 7-way, RV-style trailer connector on your vehicle with this T-One harness. T-One connector plugs directly into existing wiring - no cutting, splicing or tapping required. ModuLite reduces strain on wiring system. 1-800-940-8924 to order Tekonsha custom fit vehicle wiring part number 118290 or order online at etrailer.com. Free expert support on all Tekonsha products. Great prices and Fastest Shipping for Tekonsha OEM Replacement Vehicle Wiring Harness with 7-Way Trailer Connector. Custom Fit Vehicle Wiring reviews from real customers.
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  • Reviews (25)
  • Q & A (0)
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Tekonsha Custom Fit Vehicle Wiring

  • Custom Fit
  • Trailer Hitch Wiring
  • 7 Round - Blade
  • Powered Converter
  • Tekonsha

Replace the damaged 7-way, RV-style trailer connector on your vehicle with this T-One harness. T-One connector plugs directly into existing wiring - no cutting, splicing or tapping required. ModuLite reduces strain on wiring system.


Features:

  • Wiring harness replaces damaged factory 7-way, blade-style trailer connector at the back of your vehicle
    • Enables your truck to power your trailer's signal lights
    • Compatible with 4-pole, 5-pole, and 6-pole adapters (sold separately)
  • Connects quickly and easily - no cutting or splicing of wires
    • Tow harness with 7-way connector plugs into connection point behind rear interior trim panel
    • ModuLite connects in rear cargo area
  • Supplies required relays and fuses to activate functions
  • Constructed of 16-gauge bonded wire
  • Mounting bracket sold separately


Specs:

  • Maximum amperage:
    • Stop/turn lights: 4.2 amps per circuit
    • Tail lights: 12 amps per circuit
  • Limited 1-year warranty


Installation

This custom-fit T-One connector plugs into your vehicle's wiring harness. You will have to remove access panels, threshold, trunk floor panels and trays, and some interior paneling to access this harness. The connection point for the 7-way tow harness is located behind the rear bumper, on the driver's side. The Modulite plugs into the factory wiring harness within the driver's-side storage compartment in your rear cargo area. Once you've plugged in the Modulite, insert the included fuses and relays into your fuse panel as indicated in the instructions.


Once installation is complete, the 7-way 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 7-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.



118290 Tekonsha Replacement Harness for Factory Tow Package - 7 Pole - Modu-Lite

Item # 118290

Installation Details 118290 Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Customer Satisfaction Score:


Customer Reviews

Tekonsha OEM Replacement Vehicle Wiring Harness with 7-Way Trailer Connector - 118290

Average Customer Rating:  4.5 out of 5 stars   (25 Customer Reviews)

Replace the damaged 7-way, RV-style trailer connector on your vehicle with this T-One harness. T-One connector plugs directly into existing wiring - no cutting, splicing or tapping required. ModuLite reduces strain on wiring system.

by:
2021 Subaru Ascent

The parts were excellent.



by:

Super easy hookup and install. Long overdue upgrade!



by:

Great harness for my Subaru - see details with the instal, please. And thank you Sara R for your knowledge and help during the ordering process. I appreciated it very much!
https://youtu.be/gnpKvDiLUfc



by:

Simple plug and play.



by:
2020 Subaru Ascent

Installed in my 2020 Subaru Ascent with no issues. The only thing I didn't do was run the black wire to the battery. All other lights tested okay and will be using it for the first time on the 30th of June.



by:
Subaru

Overall great product. It was a little hard finding the adapter for my make and model (2020 Subaru ascent), but after I ordered that it was plug and play! Ran the 7-pin and pulled my trailer several hundred miles with no issues. I did have the unit reset a few times when restarting the vehicle. 10/10.



by:
2020 Subaru Ascent

Kit was nice, but the bracket I purchased did not match the 7 pin connector so I had to drill the connector to match the holes.

R I.

5/6/2021

Product electronics failed within 1 year. I had to splice in other trailer controller electronics.

Sierra K.

5/17/2021

Thank you for your review. This product has a 1 year warranty. Be sure to check warranties out in the future.


by:

It was easy to install. the only problem with the installation was for the plug mounting. There was no clear cut mounting instruction and where to put it. It worked out ok. All is working well.



by:
2019 Subaru Ascent

Great hitch, easy to install. The 7-pin wiring harness was a bit more complex but I was able to find a way NOT to drill a new hole in my Subaru. I hope to share what I found with etrailer.com so that they can do a video of it. Shipping was fast and have been impressed with them before and will continue to do business with them in the future.



by:

Very easy to install, much closer to a 2 out of 10 installation difficulty. You must pull the rear facia, which has about 6 screws and 10 plastic plug in holders, unbolt the bumper (8 bolts), and bolt on the hitch in place of the bumper using the same holes. Piece of cake.

It would be helpful if they would tell you that the top 2 plastic push in fasteners at the rear wheels will release if you push the tiny center button in. This is opposite of normal and can be frustrating. Less than 1 hour install.

Seven pin connector looks to be a PIA, but I need the reverse light signal.



by:

Perfect fit. Has been in for over a year with regular use and no problems. Customer service is also great from this company. Would use them again



by:

Not easy to made the connections at back of the receptacle but once connected it worked fine. Videos at etrailer are excellent and very helpful!!



by:
2019 Subaru Ascent

Maybe don't connect the power wire and the ground in the wire wrap. I plugged in the power and immediately burned out the fuse. Maybe that is my bad but the directions could have been a little more clear about that.



by:

Product arrived with a component broken. This order was returned, feedback was requested to alert me if item was received. At this time, I have not received feedback regarding of this return was processed.



by:

A work Intensive kit, but high quality material for a custom installation.



by:

Great Service.



by:

Gene A.

12/11/2023

I have had absolutely no problems with this trailer wiring kit. It was plug compatible with my 2022 Ascent. The thing that took the most time was running the 12 volt wire up to the battery. Important to know that all Ascents have a connector beneath the cover near the rear bumper. Even if Subaru says it does not. Its a problem of semantics, if you didnt purchase the towing package the answer seems to come back you dont have it, but you do.



by:



by:
2019 Subaru Ascent

Product arrived in timely fashion and with no issues.



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by:
2020 Subaru Ascent



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2021 Subaru Ascent



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2021 Subaru Ascent



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2022 Subaru Ascent



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

  • Can Redarc Tow-Pro Elite RED44FR Be Installed On 2017 Subaru Outback Wagon To Tow Pop-Up Camper?
    If your pop-up trailer has electric trailer brakes then the Redarc Tow-Pro Elite Trailer Brake Controller - 1 to 3 Axles - Proportional # RED44FR you were looking at is a perfect choice for a trailer brake controller, and will work with your 2017 Subaru Outback Wagon. Since you mentioned you only have a 4-way connector currently installed, you will need to install a 7-way connector, but the # 118290 you were looking at is only confirmed to fit the 2019-2021 Subaru Ascent. Instead you...
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  • How To Mount 7-way Connector To Trailer Hitch Receiver On 2021 Subaru Ascent
    You will want to use the short no drill mounting bracket # 18140 to secure the 7-way connector to the Curt # C25VR on your 2021 Subaru Ascent. If you have not already ordered the 7-way connector I recommend the Tekonsha OEM Replacement Vehicle Wiring Harness with 7-Way Trailer Connector # 118290 which is confirmed to fit your vehicle. In addition you will need another mounting bracket, # PK12711U as well. I included a few videos of the products mentioned for you to take a look at.
    view full answer...
  • Parts Needed to Install Brake Controller in 2019 Subaru Ascent with Curt 4-Way
    Since your 2019 Subaru Ascent has a Curt 4-way # C56040 installed that would indicate that you do not have the factory tow package which means you do not have brake controller wiring under your dash. So to convert to a 7-way and install a brake controller you'd need the # ETBC7 which is a 4-way to 7-way adapter that also comes with all wiring needed for brake controller installs. Then for a brake controller the Brake EVN # TK63VR is a really great option that's proportional and very reliable.
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  • Trailer Connector/Wiring Harness for 2021 Subaru Ascent
    The correct wiring harness needed will depend on the type of trailer you're wanting to pull. If you're pulling something basic like a small utility trailer and only need a 4 pole trailer connector, the # 118790 would be what you need. However, if your trailer has a 7-way trailer connector, you'll need the # 118290.
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  • Troubleshooting No Power to 7 way Plug From Converter on Tekonsha 118290
    The Tekonsha # 118290 is a confirmed fit on the 2020 Subaru Ascent, and it sounds like maybe you're seeing different colors on the wires coming out of your factory harness compared to the one on the on the Tekonsha # 118290 harness. I'll start by saying that the colors aren't always a perfect indicator, so you can use a circuit tester like the # PTW2993 to test the wires going into the harness that you're plugging into to make sure that they're providing power with the appropriate functions...
    view full answer...
  • Comparing EcoHitch and OEM Hitch to Curt and etrailer Hitches on 2022 Subaru Ascent
    I'll start with the EcoHitch Invisi Trailer Hitch Receiver # 306-X7381. The price on any EcoHitch comes from the material used in the construction of the hitch. It uses a special alloy made of recycled materials and combines aluminum, steel, and stainless steel. You are right about the OEM hitch too, a lot of times they come with a wiring harness. On some vehicles if you get it with the OEM hitch the bumper may also be different to allow for an OEM look. For your 2022 Subaru Ascent that...
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  • Recommended Wiring Harness For EcoHitch Invisi Trailer Hitch Receiver On a 2021 Subaru Ascent
    The EcoHitch Invisi Trailer Hitch Receiver # 306-X7381 for your 2021 Subaru Ascent only has the mounting bracket for a 7-way connector. No wiring for the trailer connector is included with the receiver. The Tekonsha OEM Replacement Vehicle Wiring Harness with 7-Way Trailer Connector # 118290 is the wiring kit that you will need to install a 7-way connector on your receiver. The wiring plugs into the factory connector inside the back of your Ascent. If you have a larger trailer that...
    view full answer...
  • Parts Needed to Tow Trailer with Brakes with 2022 Subaru Ascent
    The parts you'd want to tow the Coachmen Clipper Ultra Lite with your 2022 Subaru Ascent would be the etrailer hitch part # e55ZR, then for trailer wiring you'd need the 7-way kit part # 118290. Then for a brake controller the Curt Echo Mobile part # C51180 which is a wireless option that once synced to your smart phone is ready to tow once plugged into the 7-way.
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  • Is etrailer or EcoHitch Better for a 2021 Subaru Ascent
    Hey Sergi, thanks for reaching out! Go with the etrailer Trailer Hitch Receiver # e55ZR. There are some subtle differences in design but really what the price difference amounts to is the EcoHitch Invisi Trailer Hitch Receiver # 306-X7381 was really the first of it's kind on the market, but then other companies started coming out with their own designs like it and TorkLift/EcoHitch still thinks that their design is much more superior to everything else on the market...which it isn't. Then...
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  • Best Hidden Trailer Hitch Receiver For 2021 Subaru Ascent
    For your 2021 Subaru Ascent there are four trailer hitch receivers that will be all be hidden behind the center bumper cover, the EcoHitch # 306-X7381, the Curt # C25VR, the Draw-Tite # 76253, and the etrailer # e55ZR. These hitches are all pretty similar as they all share the same 750lb tongue weight rating and 5,000lb trailer weight rating, and will all install with the crosstube hidden so only the receiver itself will be visible. Since all of these hitches share the same design they...
    view full answer...
    Image 1 for Image 2 for
  • Recommended 7-Way Connector for a 2021 Subaru Ascent
    I would be happy to help you. For a 7-way wiring harness on your 2021 Subaru Ascent you will want the Tekonsha OEM Replacement Vehicle Wiring Harness with 7-Way Trailer Connector item # 118290. This custom-fit T-One connector plugs into your vehicle's wiring harness. The connection point for the 7-way tow harness is located behind the rear bumper, on the driver's side. You will also need the Mounting Bracket and Installation Hardware item # PK12711U to mount the 7-way onto your hitch. Unless...
    view full answer...
  • 20 amp or 40 amp Charger for 2021 Subaru Ascent for Use with Tekonsha Trailer Wiring 118290
    Due to the thinner gauge wiring of the # 118290 for the 12 volt accessory circuit you'd be limited to the 20 amp charger for your battery.
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  • Comparing Curt Trailer Hitch C25VR and Draw-Tite 76253 For 2021 Subaru Ascent
    You are correct that the Curt Trailer Hitch Receiver # C25VR and Draw-Tite # 76253 you were looking at for your 2021 Subaru Ascent are very similar. They both share pretty much the same design, and both have a 750lb tongue weight rating and 5,000lb trailer weight rating. With that said I recommend going with the Curt # C25VR due to it being made here in the USA, and in our experience the powder coat finish used on the Curt brand hitches holds up the best leading to a hitch that will stay...
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  • Do I Have to Connect the Black Wire on the 118290 on my 2020 Subaru Ascent
    If all of your signals are working there may be no need to connect the wire that is for the 12 Volt trailer power on the Tekonsha OEM Replacement Vehicle Wiring Harness with 7-Way Trailer Connector part # 118290 but I can not advise you to do anything except what is found in their instructions which states to connect the wire. In some cases not only does this wire power the 12 volt connector but may also be used to power the converter taking the excess strain off of your vehicles wiring harness.
    view full answer...
  • Recommended 7-Way Connector for a 2019 Subaru Ascent
    Yes, there is a plug in 7-way connector for your 2019 Subaru Ascent. It is the Tekonsha OEM Replacement Vehicle Wiring Harness with 7-Way Trailer Connector item # 118290. It uses the same connector as the 4-ways. I have linked the installation instructions below.
    view full answer...
  • Trailer Hitch Recommendation for a 2020 Subaru Ascent Towing Boat Trailer
    For towing a boat trailer with your 2020 Subaru Ascent the etrailer hitch part # e55ZR would be a great option. It has plenty of capacity and also is hidden behind the rear bumper panel of the vehicle when not in use. Then for trailer wiring the best option is the # 118290 since you said your trailer has brakes. This will give you a 7-way and wiring needed to install a brake controller like the Brake EVN # TK63VR with the install harness # 3062-P.
    view full answer...
  • Parts Needed To Install 7-Way Onto 2022 Subaru Ascent With etrailer Trailer Hitch Receiver # e55ZR
    The Mount # 18140 can be attached to the cross tube on the etrailer Trailer Hitch Receiver # e55ZR for your 2022 Subaru Ascent. This allows you to attach the 7-Way Mounting Bracket # PK12711U without having to drill into any of your facia or the receiver. The Tekonsha OEM Replacement Vehicle Wiring Harness # 118290 is custom fit to connect on your Ascent and give you a 7-way connector.
    view full answer...
  • Parts Needed To Tow Trailer With 2021 Subaru Ascent
    The Curt Trailer Hitch Receiver # C13400 you were looking at for your 2021 Subaru Ascent includes everything needed to get it installed. Now since you mentioned you are planning on towing a trailer you will need a vehicle wiring harness # 118790 if your trailer has a 4-way connector, or # 118290 if your trailer has a 7-way connector. In addition if it has a 7-way connector and trailer brakes you will also need a trailer brake controller. I recommend the Curt Echo Wireless # C51180 as...
    view full answer...
  • Recommended Brake Controller for 2021 Subaru Ascent Without Factory Hitch
    The Brake Controller that I would recommend is the Curt Echo Wireless Trailer Brake Controller # C51180. This brake controller will plug directly in between the 7-Way on your 2021 Subaru Ascent and the 7-Way on your 2017 Airstream RV Sport 16. The great thing is there is nothing to mount in your Subaru so you can easily move this between vehicles as you need. And there is no additional wiring for this unit under your dash that you will need to have connected. This is also a proportional...
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  • Recommended 7-Way Connector for a 2021 Subaru Ascent
    Yes, it can. To add a 7-Way to your 2021 Subaru Ascent you will need the Tekonsha OEM Replacement Vehicle Wiring Harness item # 118290. This will provide you a 7-way connector and all the wiring and hardware you will need to install it and connect the Redarc Tow-Pro Liberty Brake Controller item # RED24FR. There are a couple of options to connect the Tow-Pro Liberty to your Subaru which one you need will be determined by whether or not you have the factory tow package. The tow package...
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    Image 1 for
  • Brake Lights and Turn Signals Not Working on Trailer With Tekonsha 7-Way Harness On 2020 Ascent
    It sounds like there may be a damaged or missing fuse on your 2020 Subaru Ascent. I recommend checking your fuse panel for any damaged or missing fuses that are identified as trailer or turn signal fuses. You can also test the wiring going into the powered module for signal with a Circuit Tester # PTW2993. This will help you to determine if the module on the Tekonsha OEM Replacement Vehicle Wiring Harness # 118290 is faulty or if you are not getting the signal from the Ascent that tells...
    view full answer...
  • Trailer Hitch Recommended for Bike Rack and Towing With 2022 Subaru Ascent
    The Curt # C13400 Class III hitch you'd looked at is indeed a fit for your Ascent, but I'd recommend a concealed hitch like the etrailer brand # e55ZR which would actually mount behind the rear bumper (the hitch actually replaces the factory bumper beam) and utilize the removable panel in the rear bumper cover. This has the huge advantage of allowing you to replace the bumper panel when the hitch isn't being used, which makes the hitch completely invisible. If you'll be towing with the...
    view full answer...
  • What Is Needed To Install The Redarc Tow-Pro Elite RED44FR In 2021 Subaru Ascent?
    The Redarc Tow-Pro Elite Trailer Brake Controller # RED44FR you were looking at will absolutely work in your 2021 Subaru Ascent, but how it is installed will depend on if your Ascent has the factory tow package or not. If your Ascent has the factory tow package you will be able to use the Tekonsha Plug-In Wiring Adapter for Electric Brake Controllers # 3062-P which will plug into the factory trailer brake controller port underneath the dash of your vehicle, and will only require you to...
    view full answer...
  • 7-Way, Trailer Hitch, and Brake Controller for 2019 Subaru Ascent
    For your 2019 Subaru Ascent we have the 7-way kit part # 118290 which is a confirmed fit and installs with minimal wiring since it ties into factory wiring. The Draw Tite hitch part # 76253 has a bracket to the left of the hitch opening that a 7-way can attach to. You can use a bracket like the # C67UR to attach to the 7-way of the # 118290. Then for a brake controller the Redarc Tow Pro Liberty part # RED24FR would be a really great choice as it's mostly out of main view, is proportional,...
    view full answer...


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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 Kathleen M
Installed by:
Kathleen M
Employee Chris R
Video Edited:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Isabelle B
Updated by:
Isabelle B
Employee Ronnie R
Written by:
Ronnie R

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