Will Curt Echo In-Line C79DR Work With 7-Way In Truck Bed And 7-Way On Bumper?
Updated 11/13/2025 | Published 10/14/2025
Question:
I am looking to purchase the C79DR, I have a 2025 GMC 2500 Denali that has a bumper and bed plug. How does this controller have the ability to work both plugs when it only gets installed to the bumper plug? I mainly pull gooseneck trailers but have trailers which require a bumper plug. Should I install this on the bed plug? Or the bumper plug? Or would I be required to purchase two controllers? Any bit of guidance would be very helpful.
asked by: Josh L
Expert Reply:
Hello Josh, that is actually a really good question. The Curt Echo In-Line Bluetooth Brake Controller # C79DR does have the ability to work with the 7-way in your bed, and the one on your bumper. What you will want to do is install the controller behind the plug in the bed. As long as the controller is Tees into the wiring before both plugs, it will work with both. This way it will give you braking capability at the bed plug and the bumper plug.
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Product Page this Question was Asked From
Curt Echo In-Line Bluetooth Brake Controller w/ OneControl App - Up to 4 Axles - Proportional
- Trailer Brake Controller
- Proportional Controller
- Electric
- Plug-In
- Smartphone App
- Under-Dash
- Up to 4 Axles
- Smartphone Display
- Multiple Trailers
- CURT
more information >
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Jesse M.
11/13/2025
Hey Josh, how did things go with installing the Curt Echo In-Line Bluetooth Brake Controller behind the bed plug on your Denali? Did it end up giving you braking power at both the bed and bumper plugs like you needed? Your update could make it easier for others setting up a similar truck.