Wiring Harness And Brake Controller Recommendation For 2024 Mercedes-Benz GLS450
Updated 12/15/2025 | Published 11/12/2024
Products Featured in This Question
Question:
I am curious if you have a trailer brake controller wiring harness to fit a 2024 Mercedes Benz GLS450, and if so, which brake controller is suggested. Thanks!
asked by: Tim
Expert Reply:
Hello Tim, thanks for reaching out. We do offer a wiring harness for the 2024 Mercedes-Benz GLS450. If you need to install a brake controller use the Curt Powered Tail Light Converter # C59236 along with the Universal Installation Kit # ETBC7L. These two kits combined contain everything you need to wire the vehicle with a 7-way trailer connector and use a wireless brake controller like the Curt Echo # C51180 which is what I recommend. This controller plugs directly into the 7-way and is Bluetooth enabled so everything is controller via the Curt smartphone app. The video linked below will show you the Curt Echo brake controller in more detail. Feel free to reach out if you have any other questions.
Jesse M.
12/15/2025
Hey Tim, how did things go with the Curt Echo brake controller on your GLS450? Did the wiring setup with the converter and upgrade kit work smoothly? Your update could make it easier for the next person with the same vehicle.