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7-Way Trailer Connector for a 2017 Mercedes-Benz Sprinter 2500  

Updated 12/31/2017 | Published 12/30/2017



Question:

Just purchased a new 2017 MB Sprinter without hitch wiring, i see that it already has a flat wiring harness, now I need a 7 pin?

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Expert Reply:

In order to install a 7-way trailer connector on the rear of your 2017 Mercedes-Benz Sprinter 2500 to your existing 4-way, you will need the Adapter 4-Pole to 7-Pole and 4-Pole part # 37185. Unfortunately, they do not make a wiring harness that splices into the taillights and give you a 7-way trailer connector therefore this will be your only option.

If you will be towing a trailer with brakes then instead of part # 37185, you will want to use the Universal Installation Kit for Trailer Brake Controller part # ETBC7 as this kit contains the rest of the wires needed to install a brake controller. The brake pedal signal wire for your vehicle is not easily accessible therefore the Roadmaster Stop Light Switch Kit part # RM-751475 will also be needed.

For a brake controller, I recommend the Tekonsha Prodigy P3 Trailer Brake Controller part # 90195 as this is one of our top selling brake controllers due to its ease of use and integrated safeguards. You can check out the installation video I have attached for you which shows you everything you will need to do to install a brake controller on your 2017 Mercedes-Benz Sprinter 2500.

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Conner L
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