Tekonsha OEM Replacement Vehicle Wiring Harness with 7-Way Trailer Connector
(25 reviews)
Price: $121.60
In Stock
Tekonsha OEM Replacement Vehicle Wiring Harness with 7-Way Trailer Connector
Item # 118290
Our Price: $121.60
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Tekonsha Custom Fit Vehicle Wiring - 118290
- 7 Round - Blade
- Trailer Hitch Wiring
- Custom Fit
- 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
Installation Details
This Product Fits The Following Vehicles
- 2019 - 2022 Subaru Ascent
California residents: click here
Customer Satisfaction Score:
87% were satisfied with this product
13% of customers were not satisfied
- Wrong item was ordered
- Product did not meet expectations
- Alternate product found
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: John04/13/2024
Super easy hookup and install. Long overdue upgrade!
by: Andrew C.10/29/2023
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: Daniel 11/22/2023
Simple plug and play.
by: Rjhanson195306/17/2020
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: Andrew 03/17/2023
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: Fred 05/05/2020
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.
by: Zachary04/30/2020
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: David09/14/2022
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: Zachary03/15/2021
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: Perry03/01/2023
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: Charles 06/01/2021
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: Don03/05/2022
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: Bryan04/07/2022
A work Intensive kit, but high quality material for a custom installation.
by: Mike10/02/2022
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: Gregory12/01/2022
Great Service.
by: Gene11/06/2022
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: Albert03/24/2024
by: Daniel 08/23/2021
2019 Subaru Ascent
Product arrived in timely fashion and with no issues.
by: Linda 03/22/2024
by: Matt 09/03/2021
2020 Subaru Ascent
by: Alex03/23/2023
2021 Subaru Ascent
by: Earl02/01/2021
2021 Subaru Ascent
by: Eric 08/13/2022
2022 Subaru Ascent
by: Marshall 03/01/2023
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view full answer... - Do I Have to Connect the Black Wire on the 118290 on my 2020 Subaru AscentIf 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.
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Do you have a question about this Custom Fit Vehicle Wiring?
Info for this part was:
Edited by:
Lindsey S
Expert Research:
Jameson C
Installed by:
Kathleen M
Video Edited:
Chris R
Updated by:
Wilson B
Updated by:
Isabelle B
Written by:
Ronnie R
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R I.
5/6/2021
Product electronics failed within 1 year. I had to splice in other trailer controller electronics.