How To Install a Brake Controller on 2017 Mercedes-Benz Sprinter 3500
Published 11/20/2019
Products Featured in This Question
Question:
trying ti install a brake control on a 2017 Mercedes Sprinter chassis 3500 sun-seeker , the coach has 7 way on the tail-end , and under the drivers seat i located 3 plugs 1st one is white has 4 poles in it and has 3 hot , 2nd one was gray just has 3 poles none hot , 3rd one has 2 poles non hot . if t is not equipped with a plug in style can I hard wire , i have heard of people having problems with that system on a hard wire job .
asked by: Guy S
Expert Reply:
You can hard-wire in a brake controller, and it seems that there are not a lot of the Sprinter 3500 models that are pre-wired, at least from what I've seen in my research. I have not seen any reports that this isn't possible, and we even have an installation video to walk you through the process.
The way to find out whether or not the plug is present by using a circuit tester like the # PTW2993 and testing for a hot wire when the brake is pressed- it's possible that one of the plugs that you've already tested and was not hot, is in fact hot when the brake is pressed. If you're able to find that plug, you can use the Tekonsha Custom Wiring Adapter for Trailer Brake Controllers - Dual Plug In # 3063-P (this is not a universal plug, but if you let me know what model brake controller, you're installing I can let you know if it works).
If you don't have a hot wire when the brake pedal is pressed, you'll need to hard-wire in your connection to the brake controller. You will need to wire in a separate brake signal switch wire with the Roadmaster Stop Light Switch Kit # RM-751475, as well as making connections to the 12v power, brake controller wire and ground connection. I've attached a detailed video on how to hard-wire in a brake controller on the 2017 Mercedes-Benz Sprinter 3500 that shows how to complete all of these tasks and get a fully working brake controller in your vehicle.
Product Page this Question was Asked From
Featured Help Information
Miscellaneous Media
Continue Researching
- Search Results: trailer tires and wheels
- Shop: Brake Controller
- Search Results: trailer brakes
- Search Results: kodiak stainless
- Search Results: brake controller
- Shop: Kodiak Disc Brake Kit - 10" Rotor - 5 on 4-1/2 - Stainless Steel - 3,500 lbs
- Shop: DeeMaxx Disc Brake Kit - 10" Hub/Rotor - 5 on 4-1/2 - Maxx Coat/Stainless - 3,500 lbs
- Search Results: electric break controller
- Shop: Redarc Tow-Pro Elite Brake Controller w/ Custom Harness - Dash Knob - Off-Road Mode - Up to 3 Axles
- Search Results: 3063p
- Shop: Kodiak Disc Brake Kit - 10" Hub/Rotor - 5 on 4-1/2 - Dacromet and Stainless - 3,500 lbs
- Shop: Hub Bearing Kit for Lippert, Dexter, and AL-KO Axles - 3,500 lb with #84 Spindle
- Shop: DeeMaxx Disc Brake Kit - 10" Rotor - 5 on 4-1/2 - Stainless Steel - 3,500 lbs
- Video: In-Depth Review of the Steel Spoke Trailer Wheel
- Shop: Steel Spoke Trailer Wheel - 15" x 6" Rim - 5 on 4-1/2 - Galvanized Finish
- Video: The Low-Down on the DeeMaxx Disc Brake Kit
- Shop: Trailer Hitch
- Search Results: 30 amp inline fuse
- Shop: Vehicle Tow Bar Brake System
- Q&A: Brake Controller Install On 2019 Mercedes-Benz Sprinter 2500 Without Green Plug Under the Seat
- Article: Trailer Wiring Diagrams
- Shop: Trailer Wiring
- Q&A: Brake Controller Installation on 2016 Mercedes-Benz Sprinter
- Q&A: How Do I Change From Surge Hydraulic Brakes To Standard Electric Brakes?
- Video: Review of Rich Solar Solar Inline Fuse Holder 30 Amps - RS44VR
- Video: Installation: Curt Spectrum Brake Controller w/ Custom Harness on a 2020 Chevrolet Colorado
- Video: Redarc Tow-Pro Trailer Brake Controller Plug-and-Play Wiring Harness Review
- Video: Redarc Tow-Pro Liberty Brake Controller Installation - 2019 Toyota Highlander
- Video: Feature Breakdown: Universal Installation Kit for Trailer Brake Controller
- Q&A: 7-Way RV Trailer Connector Wiring Diagram
on Automotive Tools
