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Parts Needed to Add Brake Controller to Freightliner M2  

Updated 10/01/2026 | Published 06/10/2024

Question:

do you offer a plug and play brake controller for a 2023 freightliner m2 if not what do you recommend ?

0

Expert Reply:

Hi Troy,

There are no plug-and-play brake controllers for your Freightliner M2, so you'll have to hardwire everything in. The first thing you'll need is a 4-way, the Curt Powered Tail Light Converter with 4-Pole Flat Trailer Connector # C59236, followed by the Universal Installation Kit for Trailer Brake Controller # ETBC7.

You will first install the 4-flat, which will activate your trailer's lighting functions, and you'll then plug that into the 7-way that comes with the # ETBC7, which also gives you the wiring, circuit breakers, and rest of the hardware needed for installation.

With that you can install a brake controller, with the best option being the user-friendly, highly reliable Prodigy P3 Brake Controller # 90195.

expert reply by:
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Kyle S
Jesse M. profile picture
Etrailer Expert

Jesse M.

2/17/2026

Hey Troy, how did the setup go with the Curt converter, ETBC7 kit, and Prodigy P3 on your Freightliner M2? Your update could make it easier for the next person working through a similar wiring project.

Nick B. profile picture

Nick B.

9/30/2026

@JesseM man I could use some help to Take this work on my 07 freightliner M2
Jesse M. profile picture
Etrailer Expert

Jesse M.

10/1/2026

@NickB The Curt # C59236 along with the # ETBC7 kit is definitely the best way to add an RV 7-way to a Freightliner. The # C59236 splices into the trucks brake light and tail light circuits. Then you run a wire to the battery to power the converter. Then the # ETBC7 has everything you need to upgrade the 4-flat to a 7-way. It's a pretty standard installation. I'd say the hardest part can be finding the right wires to splice into. What part of the installation did you need help with?

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