Can a Curt Echo Trailer Brake Controller Be Powered By The Trailer Battery?
Updated 05/09/2024 | Published 05/08/2024 >
Products Featured in This Question
Question:
If my trailer has a wireless brake controller and also a solar panel charging the on-board battery, can I just use a 4 flat to 7 round adapter and still control the trailer brakes?
asked by: John
Expert Reply:
On a wireless brake controller like the Curt Echo # C51180 you found it needs the power coming from the vehicle to power it. So you would at least need a Charge Line # RM-156-75 with an Adapter # 37185 to make the controller function.
Also your state laws are likely going to specify you have to have power coming from the vehicle to maintain the charge on the battery for your trailer as it is likely also the breakaway battery.
Product Page this Question was Asked From
Curt Echo Wireless Brake Controller - 7-Way Plug-in w/ Bluetooth App - Up to 2 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Plug-In
- Smartphone App
- Under-Dash
- Up to 2 Axles
- Smartphone Display
- Multiple Trailers
- CURT
more information >
Featured Help Information
Instructions
Continue Researching
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Article: Towing a Trailer? Let's Talk About Brake Controllers
- Article: Brake Controller Installation: Starting from Scratch
- Article: Trailer Wiring Diagrams
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Article: Curt Echo Full Review
- Q&A: Which Wireless Trailer Brake Controller Is Best
- Q&A: Can I Use a 4 Way Vehicle Connector with 7 Way Adapter and the Curt Echo Brake Controller?
- Q&A: Will The Curt Echo Manual Override Button C83HR Work Without The App?
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Q&A: Parts Needed to Tow Tear Trailer With 2026 Subaru Forester Wilderness With Factory Hitch
- Q&A: My Vehicle has a 4-Pin Trailer Plug, but Trailer has 7-Pin Trailer Plug
- Q&A: How to Use a Curt Echo Wireless Brake Controller on a Vehicle w/a 4-Way Connector
- Article: 5 Things to Know About Weight Distribution Hitches

