Wiring Harness Needed to Install a Curt Spectrum in a 2025 Subaru Outback
Updated 10/30/2025 | Published 02/18/2025 >
Products Featured in This Question
Question:
Hello! Last year I bought C51170 from the site to use on my Hyundai. Im now going to be trading that for a 2025 Subaru Outback, and am trying to figure out what other parts Ill need to get that brake controller installed on the new vehicle. Thanks! Austin, TX
asked by: Joseph R
Expert Reply:
Hey Joseph congrats on the new car! To install the Curt Spectrum Brake Controller item # C51170 in your new 2025 Subaru Outback you'll need the Universal Wiring Adapter for Curt Trailer Brake Controllers item # C51515. There is no plug and play adapter.
If you have any additional questions go ahead and add them to the comment box below and I'll be happy to help you.
Product Page this Question was Asked From
Redarc Tow-Pro Liberty Brake Controller w/ Universal Wiring Harness - Dash Knob - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Electric over Hydraulic
- Splice-In
- Dash-Mounted Knob
- Behind-Dash
- Up to 2 Axles
- Indicator Lights
- Single Trailer Only
- Redarc
more information >
Featured Help Information
Instructions
Continue Researching
- Shop: Trailer Wiring
- Search Results: tekonsha 118467
- Search Results: trailer wiring
- Shop: Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Shop: Curt T-Connector Vehicle Wiring Harness with 4-Pole Flat Trailer Connector
- Shop: Universal Installation Kit for Trailer Brake Controller - 7-Way RV and 4-Way Flat - 10 Gauge Wires
- Shop: Brake Controller
- Search Results: tekonsha prodigy rf
- Search Results: etbt7
- Search Results: etbc7l
- Shop: Universal Wiring Adapter for Curt Trailer Brake Controllers
- Shop: Universal Wiring Harness for Redarc Tow-Pro Trailer Brake Controllers
- Shop: 7-Way RV Upgrade Kit for Trailer Brake Controller Installation - 12 Gauge Wires
- Shop: Replacement Relay Switch for Bulldog Winch Air Compressor - 40 Amp
- Q&A: Why Use 10-Gauge Wire # 10-2-1 Rather Than 12-Gauge # 12-2-1 for Electric Trailer Brake Circuits
- Q&A: Installing a 7-Way Connector on a 2020 Subaru Outback Wagon for Towing a Trailer
- Q&A: Installing A 7-Way Trailer Connector On A 2020 Subaru Outback Wagon
- Q&A: Connecting Relay To 7-Way Charge Line Circuit To Prevent Trailer Draining Vehicle Battery While Off
- Q&A: Recommended 7-Way Connector for a 2024 Subaru Legacy
- Q&A: Troubleshooting Vehicle Battery Drain After 7-Way and Brake Controller Installation
- Shop: Trailer Hitch
- Video: etrailer Trailer Brake Controller 7-Way RV Upgrade Kit Installation - 2020 Subaru Outback Wagon
- Q&A: Recommended Hitch and 7-Way Connector for a 2024 Subaru Outback


Jerred H.
10/30/2025
Hey Joseph, how did things go getting the Curt Spectrum brake controller set up in your new Subaru Outback? Your update could make it easier for others moving their controller to a new vehicle.