Metra 40-LX11 Antenna Adapter
Metra 40-LX11 Antenna Adapter

Kenwood Excelon DMX905S OBD2 Integration and Installation Guide

The Kenwood Excelon DMX905S is a popular choice for car audio enthusiasts seeking a premium in-dash receiver with advanced features like Apple CarPlay and Android Auto. This guide outlines the installation process of the DMX905S, focusing on integrating its features while maintaining existing functionalities like steering wheel controls and rear camera integration. This install also leverages the OBD2 port for vehicle data.

Preparing for the DMX905S Installation

Before diving into the installation, gathering the necessary components and preparing the vehicle is crucial. This ensures a smooth and efficient process.

First, remove any existing aftermarket head units, including any associated wiring harnesses and adapters. In this specific case, a Beat-Sonic CS6EP unit was replaced. The DMX905S boasts dual camera inputs, providing “on-demand” functionality for both, plus automatic rearview camera activation when reversing – a significant upgrade. Returning the factory USB port to its original location simplifies connectivity and allows for a cleaner installation.

Next, acquire essential components, including:

  • Maestro HRN-RR-TO2: This harness enables retention of steering wheel controls and provides essential vehicle integration features.

  • Stinger RCA Cables: High-quality RCA cables ensure optimal audio signal transfer for a premium listening experience.

  • E-Brake Bypass: This component may be required for certain features to function while the vehicle is in motion. Consult local regulations before installing.

  • Maestro ADS-MRR Universal Radio Replacement Interface: This module ensures seamless integration with the vehicle’s electrical system.

  • Metra 40-LX11 Antenna Adapter: This adapter connects the DMX905S to the vehicle’s factory antenna.

  • Speaker Wire and Remote Turn-On Wire: Ensure adequate lengths and gauges for your specific application.

Wiring and Integration with the DMX905S

Utilizing a detailed wiring diagram simplifies the often complex process of connecting the DMX905S to the vehicle’s wiring harness. Pay close attention to speaker polarity and ensure all connections are secure. In this instance, existing rear speakers powered by an Arc Audio xDI 850.5 amplifier needed to be integrated with the Maestro harness.

Soldering the rear speaker wires from the amplifier to the Maestro harness (as highlighted in the diagram) allows continued use of the factory speaker wiring.

This setup requires careful soldering and the use of appropriate connectors. Using a tool like the Steven Meade Designs DD-1 distortion detector aids in setting amplifier gains accurately, preventing speaker damage and ensuring optimal sound quality. Cleaning up any excess wiring from previous installations will further streamline the process and result in a tidier final product.

Finalizing the DMX905S Installation

After all connections are made, double-check each one for accuracy and security. Test the functionality of all features, including the radio, Bluetooth, Apple CarPlay, Android Auto, and rearview camera. Securely mount the DMX905S in the dash and reassemble any removed trim panels. Enjoy your upgraded car audio system with the powerful features and connectivity of the Kenwood Excelon DMX905S. This installation not only enhances the audio experience but also modernizes the vehicle’s technological capabilities.

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