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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
FITS 2025 Nissan Frontier
T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
Tekonsha

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

Part Number: 118525
In Stock
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$60.97
Retail:$87.11
You Save: 30%
Custom Fit Vehicle Wiring
Confirmed to Fit
2025 Nissan Frontier

without factory trailer connector

Will this fit?

To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

118525 - Plug-In Tekonsha Trailer Hitch Wiring
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2025 Nissan Frontier Tekonsha custom fit vehicle wiring. Tekonsha reviews from other Frontier owners. Expert custom fit vehicle wiring advice with thousands of helpful questions and answers. Great prices and fastest shipping.
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2025 Nissan Frontier - T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector

Highlights

  • Plug-and-Play Installation: Easily connect without cutting wires for quick setup.
  • Custom Fit for Nissan Frontier: Ensures tailored compatibility with years "05-"24.
  • 4-Way Flat Connector: Powers your trailer's signal lights with ease.
  • Maximum Amperage: Supports up to 7.5 amps per circuit efficiently.
  • No Converter Required: Simplifies setup by using a direct connection.
  • Durable Construction: 16-gauge bonded wire with dust cap for longevity.

Features to know about

Plug and Play Convenience: T-One Connector for Effortless Installation

Say goodbye to the hassle of splicing and cutting wires with the T-One Vehicle Wiring Harness. Designed for effortless installation, this custom-fit harness plugs directly into your vehicle's existing wiring system. Enjoy the ease of plug and play as you connect your trailer's signal lights in minutes, leaving more time for what really matters—your journey.

Weather-Protected and Durable: 16-Gauge Bonded Wire with Dust Cap

Keep your connectors protected from the elements with the sturdy 16-gauge bonded wire and accompanying dust cap. Designed to withstand various weather conditions, this system ensures your electrical connections remain pristine. Whether you're driving through rain or snow, rest assured your trailer lights will remain reliable.

Effortless Compatibility: Adapter-Friendly Design

With the ability to accommodate 5-pole, 6-pole, and 7-pole adapters (sold separately), this wiring harness offers flexibility for your towing needs. Whether you’re using different trailers or planning to upgrade, this feature provides peace of mind with its versatile design.

Corrosion Resistance and Secure Mounting: Recommended Grease Use and Mounting Bracket Option

For long-term reliability, apply a small amount of grease to all electrical connections to ward off corrosion. Additionally, consider using a separately sold mounting bracket to keep the connector secure and stable, ensuring your setup withstands vibrations and potential disconnections during travels.

Custom Tailored Fit: Precision Connection Points

The precision-engineered connection points of this harness align seamlessly with your vehicle's existing wiring along the driver-side frame rail. Specifically constructed to connect directly into the standard 12-pin plug behind the passenger kick panel, this ensures proper functionality and a perfect electrical fit every time.

Superior Power Handling: Amperage Capacity

Secure the power your trailer needs with a maximum amperage of 7.5 amps per circuit. Whether you’re towing during daylight or nighttime, enjoy a consistent and reliable source of power to keep your trailer lights visible and safe.

Specs

Electrical

  • Maximum amperage: 7.5 amps per circuit

Warranty

  • 1-Year limited warranty

Note

No specific notes found in the provided information.

118525 Tow Ready T-1 T-Connector - 4 Wire

Installation Details 118525 Installation instructions

California residents: click here


Customer Satisfaction Score:

Ratings & Reviews

4.9

934 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.

by:
2006 NissanFrontier

Good quality product.. Easy install!



by:
2008 Nissan Xterra

Very easy installation, perfect :)



by:
2008 Nissan Xterra

Worked as stated



by:
2012 NissanFrontier

Installs as easy as advertised.



by:

Easy installation. Product looks great.



by:
2012 NissanFrontier

no problems,fast shipping



by:

Perfect fit, fast, easy install in about 10 minutes. Works great.



by:

Product was as described and shipped very fast.



by:
2006 NissanFrontier

this product is great! it only took about 10 minutes to install and it works perfectly!



by:
2008 Nissan Xterra

Product was perfect. Installation was super easy, the video helped make it a breeze.



by:
2005 Nissan Xterra

Very quick delivery and instalation was way easier than I was expecting it to be!



by:
2012 NissanFrontier

EASY, Yet well built. No problems making everything fit. I'll never go to U-Haul again.



by:
2012 NissanFrontier

Fast delivery and a good instructional video made the install a snap!



by:
2006 Nissan Xterra

Wicked fast shipment with delivery notification. And the prices are great too. Product support/videos top notch.



by:

Works just as they said it would. Installed in no time at all



by:
2011 NissanFrontier

Worked as advertised. Very easy to install.



by:
2012 NissanFrontier

Very simple installation, it looks complicated in the picture but literally takes about 10 minutes to install.



by:

I installed the relays,the 4 pin plug in about 20 minutes. Worked great! Went to OuterBanks fishing with boat in tow! Thanks.



by:
2007 Nissan Xterra

It work how it was supos to work, great prices, answer questions like professionals, I will reconmend this web side to any body.



by:
2008 NissanFrontier

everything came fast. Instructions do not help much but if your somewhat mechanicaly inclined then install shouldnt be to hard.



by:
2012 Nissan Juke

The wiring kit got here right when they said it would, in the same box with the hitch. It installed quickly, and everything fit perfectly. I will never go anywhere else for trailer/towing equipment.



by:
2008 NissanFrontier

Easy installation. 45 minutes, no problems. I didn't know I needed this until I tried to get my trailer lights to work. Thanks Etrailer. The information was easy to find and the service was great!



by:
2008 NissanFrontier

The most trouble i had was getting the cover of the plug Nissan installed, which wasn't much. After that it is just a matter of plugging it in and strapping it in place. I am 72 years old and had it on in about 20 minutes.



by:
2011 Nissan Xterra

Great products, easy to install, easy to follow instructions!



by:

I just received this product and it worked great! The install video was excellent and made the process painless!


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934
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See what our Experts say about this Tekonsha Custom Fit Vehicle Wiring

  • Recommended Wiring Harness and Relays for a 2025 Nissan Frontier
    Yes, you do Eric. None of the 2025 Nissan Frontier's without the trailer connectors came with the wiring relays. Nissan's been doing this for quite awhile to save production costs. To add a 4-way connector that includes the wiring relays, you'll want the T-One Vehicle Wiring Harness item # 118525. We have a video showing the wiring harness being installed on a 2024 Frontier, which I have linked for you below. This will show you exactly where to get everything plugged in, including the...
    view full answer...
  • Best Trailer Wiring Harness For 2025 Nissan Frontier S Model
    Hello Dan, thanks for reaching out. We do offer a wiring harness for your 2025 Nissan Frontier S. We have options for both a 4-flat or a 7-way. What you will need is the following: - T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118525 - T-One Vehicle Wiring Harness with 7-Way Trailer Connector # 118266 Both of these include the jumpers and relays necessary to activate the tow package. What kind of trailer are you pulling? Does it have electric brakes?
    view full answer...
  • Will Installing a Wiring Harness Void My Vehicle Warranty?
    Hello Libin, thanks for reaching out. The Tekonsha # 118525 is the correct wiring harness for your 2024 Nissan Frontier. It is recommended to disconnect the battery before you install. Installing the wring harness will not void your warranty in any way. We get this question a lot. You are protected under the Magnuson–Moss Warranty Act which states that manufactures cannot void the warranty of a vehicle simply because of an after-market part unless that part caused the issue. It is...
    view full answer...
  • Recommended Wiring Harness w/ Relays for a 2023 Nissan Frontier
    That's because the Curt item # C56225 fits the 2005 - 2021 Nissan Frontiers. The correct one for your 2023 Nissan Frontier is the T-One Vehicle Wiring Harness item # 118525 for a 4-Way or item # 118266 for a 7-Way. I have linked a couple of installation videos below for both parts so you can see how to get them set up.
    view full answer...
  • Can Second 4-Way be Added to 2023 Nissan Frontier
    Hey David, the best option for what you are looking for is the Curt 4-way kit part # C55384. This will install inline with your 7-way and give you an additional 4-way to use with your lightbar. The harness of the 4-way would be on the longer side but you can zip tie the excess up as needed. Think this would work?
    view full answer...
  • Recommended Hitch for a 2022 Nissan Frontier
    Hey Patricia, congrats on the new camper. To add a hitch to your 2022 Nissan Frontier, I recommend our etrailer item # e98869. This hitch is custom fit and bolts to your truck with included hardware. It is a class III hitch, with a 2" receiver, that has a 5,000 lbs towing capacity, and a 500 lbs maximum tongue weight. As far as getting it installed goes, if you go to the product page of the etrailer Hitch item # e98869 and scroll down below the pics on the left side you'll see a box that...
    view full answer...
  • Trailer Hitch & Wiring For 2024 Nissan Frontier
    Hi Tom, We do have a hitch and wiring for your 2024 Nissan Frontier, though the only wiring harness fit is a hardwire application and is not plug-and-play. For both parts here's what you'd need: - Curt Trailer Hitch Receiver # 13241 - T-One Vehicle Wiring Harness with 4-Pole Flat Trailer Connector # 118525 We do have a video showing the wiring harness being installed on a '24 Frontier, which I linked for you below. We also have an install video of the hitch (also linked below), and...
    view full answer...
  • Is Just 3-Connector Relay Harness Available for 2018 Nissan Frontier
    Hey Leann, thanks for reaching out! We've had people reach out about this in the past, but unfortunately the only way to get the extra wiring in the T-One Vehicle Wiring Harness Kit # 118525 for your 2018 Nissan Frontier is to purchase the whole kit. I'm not sure why the wiring manufacturers don't sell the relay side separately but they don't. What you might want to do is get this kit and just keep the 4-Way wiring part in your glove box or a safe place as a backup just in case.
    view full answer...

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