Best Trailer Wiring Harness For 2025 Nissan Frontier S Model

Question

Question:

which T1 wire harness is the right one for a 2025 nisan frontier S model

asked by: Dan

0

Expert Reply:

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?

expert reply by: Jesse M

0

Jesse M.

9/29/2025

Hey Dan, did you decide on the 4-flat or the 7-way wiring harness for your Nissan Frontier? I'm curious about your choice because it could help others with similar towing needs.

Dan

10/2/2025

@jesse think im going with the 4-flat because i dont have a tow mode button or a brake control box on my truck im just pulling a 12foot trailer with a rideing mower to property that i have i have a bigger truck allready with the 7-way

Jesse M.

10/2/2025

@Dan Ok great! Just thought I'd check in. The Tekonsha # 118525 is what you will need then.

Answer 1

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,…

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Answer 2

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 3

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…

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Answer 4

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 5

Hi Damon! All the hitches we have for your 2025 Nissan Frontier will need a weight distribution system to get above the 5,000 pound capacity. This is likely due to the 4,500 pound curb weight of your truck (4x4 options). You really don't want…

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Answer 6

We currently offer three options for a 2024 Nissan Frontier; the etrailer #e98869, Draw-Tite #75282, and Curt #13241. Of the three the Curt and etrailer hitch options only real difference is just the finish with the etrailer having a matte black…

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Answer 7

Thanks for writing in Steve. For the 2023 Nissan Frontier I recommend our etrailer Trailer Hitch Receiver - Custom Fit - Matte Black Finish - Class III - 2" #e98869. The weight capacity of this hitch is 500 pound tongue weight, and a 5,000 pound…

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Answer 8

Hey Edwin, this is a known issue with certain Nissan models. A lot of times there will be some wiring already in place but no relays. The Tekonsha #118266 comes with the necessary relays as well as the 7-way plug but sometimes there still is a…

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Answer 9

Are there still open spots on the fuse panel? A lot of times there will be 1 brown relay that activates the 12v power for the trailer connector, and there will be 2 blue relays which are for the turn signals. So even though there are already 3…

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Answer 10

On certain Nissan vehicles like yours an additional blue relay is sometimes needed to activate the trailer running lights circuit. This appears to be the case with your 2018 Nissan Frontier since this circuit isn't active. This is a very common…

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Answer 11

Trailer running lights not working with certain Nissan vehicles is a common problem with an easy fix. There is a relay for the trailer running light circuit that is located in the fuse box (in the cab). If that relay is missing or no longer functions…

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Answer 12

This is actually a fairly common issue with certain Nissan vehicles but it should be a simple fix. It sounds like the relay for the trailer running light circuit is either missing or needs to be replaced. This relay should be located behind the…

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Best Trailer Wiring Harness For 2025 Nissan Frontier S Model

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