What is Needed to Use Curt Echo Brake Controller on 2017 Audi Q5 With 4-Way
Updated 06/10/2025 | Published 07/25/2024
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Question:
I have a 2017 Audi Q5 with a C56404 wiring harness. What do I need to be able to use a Curt 51180 brake controller since there is no Brake wire from the C56404.
asked by: Larry S
Expert Reply:
Hey Larry,
Since you already have the Curt 4-Way # C56404 installed on your 2017 Audi Q5, you're halfway there for what you need in order to install and use the Curt Echo Brake Controller # C51180.
The other part you'll need for the Echo is the 7-Way RV Upgrade Kit for Trailer Brake Controller Installation # ETBC7L.
This will give you the necessary wiring and 7-way connector for your Audi to use the Echo.
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
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Larry
6/10/2025
What do I do with the blue "connect to output of brake controller" on the Wiring adapter