How to Install the 2019–2023 Ram Heavy Duty (DT 5th generation) Auto-Dimming Interior Rear-View Mirror and Harness
Upgrading your 2019–2023 Ram Heavy Duty (DT 5th generation) truck with a factory auto-dimming interior rear-view mirror and harness is a straightforward process. This guide provides an overview of the installation, including wiring and routing procedures, differences in physical mounting hardware, and step-by-step instructions.
Overview
The installation process for the auto-dimming rear-view mirror on 2019–2023 Ram Heavy Duty trucks (DT 5th generation) closely follow the wiring and routing procedures used for DS (4th generation) Ram trucks. While the physical mirror brackets and trim pieces differ between the DS and DT models, the electrical connections and harness routing remain consistent.
Wiring and Routing Procedures
The wiring connections and routing paths for the auto-dimming mirror are identical between DS and DT body styles.
Use the DS-style wiring guide to connect power, ground, and signal wires.
The harness run locations are the same for both DS and DT models, ensuring a consistent installation process.
Physical Mounting Hardware Differences
The physical mirror bracket and trim pieces differ between DS (4th generation) and DT (5th generation) Ram trucks.
Ensure you use DT-specific mirror/bracket hardware to properly mount the mirror on your 2019–2023 Ram Heavy Duty truck.
Step-by-Step Installation Guide
Prepare the Required Hardware: Obtain the DT-specific mirror and bracket hardware for your truck model.
Follow the DS Wiring Guide: Use the DS-style wiring guide to connect the power, ground, and signal wires. Ensure all connections are secure.
Route the Harness: Follow the same wire-routing procedures used for DS models to run the harness through your truck.
Install the Mirror: Attach the auto-dimming mirror using the DT-specific bracket and trim pieces. Ensure the mirror is securely mounted.
Test the Installation: Power on your vehicle and test the auto-dimming functionality to confirm proper installation.
By following these steps, you can successfully install the factory auto-dimming interior rear-view mirror and harness on your 2019–2023 Ram Heavy Duty truck. If you encounter any issues, consult your vehicle's manual or contact a professional installer for assistance.