How Can I Use Curt Echo C51180 On 2022 Kia Sorrento With Factory 4-Flat?
Updated 01/27/2026 | Published 08/20/2024
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Question:
Hi, I have a 2022 Kia Sorento with the factory flat 4 wire plug mounted on the 2inch hitch assembly How do I connect the Curt Bluetooth wireless brake controller, part number 51180 echo, to the 4-pin? Thanks Ron
asked by: Ronald W
Expert Reply:
Hello Ronald, thanks for reaching out. We actually custom make a wiring kit specifically for this purpose. The Curt Echo # C51180 requires a 7-way plug with 12v power, so for that you can use the 7-Way Upgrade Kit # ETBC7L. This kit contains everything you need to upgrade your 4-flat connector to a 7-way, which will allow you to use the Curt Bluetooth controller.
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 >
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on Trailer Brake Controller
Jesse M.
1/27/2026
Hey Ron, how did the upgrade to the 7-way connector go with your Sorento? Were you able to get the Curt Echo working once you added the ETBC7L kit? Your update could make it easier for the next person setting up the same controller.