What Is the Difference Between the ETBC7 and ETBC7L Wiring Kits?
Updated 09/04/2026 | Published 09/02/2026
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Question:
Does the ETBC7L harness have duplex wires to the front of the vehicle?
asked by: David P
Expert Reply:
Hey David.
The # ETBC7L does not have duplex wire. This setup is best for a wireless break controller like the Curt Echo # C51180 for example. If you are looking for something with a duplex wire the # ETBC7 is perfect. It has 10-gauge duplex wire that runs to the front for your 12V connection to the battery and a break output wire to run to the cab for your break controller. It just depends on whether you'd like to use a wireless break controller or a wired/in-cab controller.
Do you already have a brake controller picked out, or are you still deciding between a wired and wireless setup?
Product Page this Question was Asked From
Curt Replacement OEM USCAR Trailer Connector - Dual Connection - 7-Way RV Style and 4-Way Flat
- Custom Fit Vehicle Wiring
- Trailer Hitch Wiring
- Vehicle End Connector
- Universal Fit
- 4 Flat
- 7 Blade
- Plug Only
- CURT
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