Parts Needed to Install Curt Brake Controller in 2014 Subaru Forester with 4-Way
Updated 01/19/2026 | Published 12/21/2025
Products Featured in This Question
Question:
Hello friends at etrailer! I bought a Curt Ventura Brake Control 51110 from you some years ago and never really needed to install until recently. I also bought the Curt T-Connector Wiring Kit 56040 I think at the same time. I now have a need to install this brake controller, It is specific for my 2014 Subaru Forester. The first thing I ran into was trying to find the factory installed female connector in my wiring harness for my Subaru. I have not yet been able to locate it, do you have any ideas? Art
asked by: Arthur H
Expert Reply:
Hey Arthur, we can definitely help but your 2014 Subaru Forester does not have a factory brake controller connector under the dash like some vehicles have. So the Curt kit # C56040 that you installed is just for a 4-way that only supports the trailer taillight functions and does not have ability to carry the brake output circuit to the trailer brakes. So with that in mind as well what you need is the brake controller install kit part # ETBC7 which comes with everything needed to convert your 4-way to a 7-way as well as wire in a brake controller like you have as well. With just this part number you'd have everything needed to install your Venture.
Does your trailer have a 7-way connector? It should be a black, round plug with 7 total pins including a center pin.
Product Page this Question was Asked From
Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Vehicle End Connector
- Powered Converter
- No Tow Package
- 4 Flat
- Plug and Lead
- Plug-In
- Hidden
- CURT
more information >
Featured Help Information
Instructions
Continue Researching
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Q&A: Where Do I Plug In Curt T-Connector C56040 On A 2025 Subaru Forester Hybrid?
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Article: Wiring Trailer Lights with a 4-Way Plug (It's Easier Than You Think)
- Q&A: Will I Need To Enlarge Holes To Install A Hitch On A 2024 Subaru Crosstrek Limited
- Article: Trailer Wiring Diagrams
- Q&A: What Hitch will Not get in the Way of My 2025 Subaru Forester Hands Free Lift Gate?
- Q&A: What Hitch For The 2026 Subaru Crosstrek Hybrid Has The Best Ground Clearance?
- Q&A: How Long Is The Malone LowBed MicroSport Trailer With The Retractable Tongue Kit
- Q&A: Curt VS Draw-Tite Hidden Cross Tube Trailer Hitch Receivers For a 2018 Subaru Outback
- Article: Trailer Hitch Installation Tips
- Article: How to Measure for Trailer Hitch Drop
- Article: How to Choose the Right Trailer Hitch Class
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
Jameson C.
1/19/2026
Hey Arthur, how did things go with wiring your Curt Venture brake controller using the ETBC7 kit? Your update could make it easier for others adding a controller to their Forester. Did the 7-way setup match your trailer connection?