C300 2021-2022

Mercedes-Benz

Installation Instructions:

Open the rear passenger side door and the trunk of the vehicle. Lay down the rear back passenger seat. The brake light wire harness will be located behind the side seat cushion closest to the door. Pop the seat cushion out and cut back the black tape to access the brake light wires.

Additional Information:

None

  • Positive Wire:

    Black

  • Ground Wire

    Brown

About wire colors:

In the event a wire has two colors listed, the first color is the base wire color. The second color is the tracer. For example, if the positive wire color is listed as "black/red." This means the wire is black with a red stripe.

Search Guides

Use your preferred search method to find the exact guide you're looking for—you can select a make, or type a search with make, model, and/or year.

MAKE SEARCH

TEXT SEARCH

 Save as PDF

NOTE: This action may take several minutes to complete.

TROUBLESHOOT

Are you having issues with installation? Check out our troubleshooting guide for common errors associated with the installation of Brake Plus modules.

ERRORS?

Do you feel there's an error in this installation guide? If so, please take a moment to tell us what you notice by calling our Installation Manager.

Troubleshooting Guide

Having issues? This guide can help you solve common issues with installation.

TOP