Parts Needed to Install Brake Controller on 2025 Toyota 4Runner

Updated 02/21/2026 | Published 08/01/2025

Products Featured in This Question

Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires

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$126.29

Curt Powered Tail Light Converter with 4-Pole Flat Trailer Connector

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$84.64

Question:

I want to get a brake controller for a 2025 Limited 4WD 4Runner. I installed one previously on a 2012 4Runner and it was easy, somewhat a plug and play. How hard will it be to install a brake controller on the new 4Runner? My understanding is the new 2025 4Runner does not have the receptacle to plug the adapter into. What are your thoughts and what would you recommend. Thanks Paul

asked by: Paul M

Expert Reply:

Hey Paul! Does your 2025 Toyota 4Runner have the factory tow package? If it does, there is a brake controller port you can use for plug and play installation. If you're using the Tekonsha POD # TK92UR you got before then you need the Tekonsha Custom Wiring Adapter # 3041-P. If you need a new brake controller I do recommend upgrading to a proportional like the P3 # 90195.

If you don't have the factory tow package with the brake controller port you will need to install a 7-way and then splice in for brake controller installation. You can use the Curt # C59236 for a 4-way and then upgrade it to a 7-way using the # ETBC7 you were looking at. This will, of course, be a more extensive installation process. However, it is the only way to install a brake controller if you don't have the factory wiring.

Do you have a trailer you typically tow or do you just want your vehicle ready to go for towing?

expert reply by: Robin H

Tekonsha P3 With Custom Wiring Harness
(click to enlarge)

Paul M.

8/5/2025

Thanks Robin, I ended up getting a different vehicle that has the tow package. Good info though. Thanks for your expertise. Paul

Robin H.

8/5/2025

@PaulM happy to help!

John

2/16/2026

Any idea where the port is for a 2026 4runner?

Robin H.

2/16/2026

@John probably under the dash to the left of the steering wheel. I don't think we have a more up to date video but I would try looking in the same spot from this 2024. See the attached installation video.

Helpful Links

tv-install-redarc-tow-pro-elite-brake-controller-with-custom-harness-2024-toyota-4runner-red56cr.aspx

John S.

2/16/2026

@RobinH what brake controller and harness u recommend for plug and play?

Robin H.

2/16/2026

@JohnS assuming you have that brake controller port the best option is the Redarc Tow-Pro Liberty # RED24FR with the Plug-and-Play Wiring Harness # RED49FR. The Liberty is simple and reliable, plus it doesn't take up space in the cab and has an OEM look.