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How To Install Roadmaster 2nd Motorhome Kit RM-98850 In 2022 Mercedes-Benz Sprinter  

Updated 06/13/2024 | Published 07/27/2021

Question:

i have a 2022 mb sprinter and have the roadmaster invis brake system already installed in my 2018 jeep wrangler jk and want to install the rm 98850 kit for the indicator light need wiring help!!

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Expert Reply:

I would be happy to help!

What you will need to do to get the Roadmaster 2nd Motorhome Kit # RM-98850 installed in your 2022 Mercedes-Benz is first install the LED light in your Sprinter where ever you decide is the best location that is visible while driving, and is preferably in a section of the dash that can easily be removed so you can drill the hole without worrying about what is behind that area. The white wire from the LED will get connected to the white wire of the audio module, and the red wire from the LED will get connected to the red wire of the audio module.

Since we have no information regarding a trailer brake controller port being installed in your Sprinter, you will need to use the included 50' black wire to connect to the two red wires and run it underneath your motorhome to your 2018 Jeep Wrangler.

That black wire will need to be connected to the wire of your Invis-Brake that goes to the stop light switch wire in your Jeep.

I included a video review of the # RM-98850 for you to take a look at.

expert reply by:
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Samuel C
David H. profile picture

David H.

6/12/2024

What does the female bullet connector attach to at the rear of the motorhome ? I have a 2021 Winnebego View on a Mercedes chassis. Using a Roadmaster Falcon 2 tow bar and Invisibrake.

Samuel C. profile picture
Etrailer Expert

Samuel C.

6/12/2024

@DavidH The bullet connector gets connected to the matching bullet connector that was included with your Roadmaster Invisibrake # RM-8700. It is the signal wire that lights up the LED in your motorhome when the brakes of your tow vehicle is depressed by the braking system.
David profile picture

David

6/13/2024

@SamuelC My vehicle only had this coiled electrical connection running from my RV to my toad. One end plugged into the 7 way receptacle on my coach and the other was a 6 way plug on the car. I never had this additional connection. I tried to send a photo but couldn’t get it to load.

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