iDatalink Maestro HRN-AR-TO3 Amplifier Replacement T-Harness for Select Toyota & Subaru Vehicles

The iDatalink Maestro HRN-AR-TO3 Amplifier Replacement T-Harness for Select Toyota & Subaru Vehicles connects a supported vehicle factory-audio system to an application-approved Maestro amplifier-integration solution. It is a vehicle-specific harness—not a standalone amplifier interface—and the exact factory audio configuration matters.

At a Glance

• Vehicle-specific plug-in T-harness for the exact applications and factory-audio configurations listed below
• Connects at the supported factory radio or amplifier location without cutting the vehicle-side audio connectors
• Supports a source-data-approved Maestro AR, AR2, or DSR1 amplifier-integration solution when programmed for the exact vehicle
• The compatible Maestro interface, aftermarket amplifier or DSP, power wiring, signal wiring, programming, and tuning are sold separately
• Designed to replace or integrate around the listed factory amplifier while retaining the factory radio in supported applications
• Factory premium-audio brand, navigation, screen, and amplifier qualifiers must match the application table
• Vehicle-specific firmware and the current installation guide must be followed; retained functions vary by application

Vehicle Compatibility

Use the table below to find the row that matches your vehicle and factory equipment. The year, make, and model must match, along with the listed factory amplifier, premium-audio brand, navigation, screen, or other equipment details. If your vehicle does not match a row exactly, contact MCOR before ordering.

Compatibility & What You Need

Important purchasing requirement: This harness is one component of a complete amplifier-integration system. Select the exact application-approved Maestro interface (ADS-MAR, ADS-MAR2, or ADS-DSR1), then add the required aftermarket amplifier/DSP equipment, amplifier wiring, speaker connections, programming, and professional system configuration.

Compatible & Related Products

• Maestro ADS-MAR AR factory-amplifier replacement interface - sold separately; application-dependent
• Maestro ADS-MAR2 AR2 amplifier replacement interface - sold separately; application-dependent
• Maestro/Rockford Fosgate ADS-DSR1 8-channel DSP interface - sold separately; application-dependent

Technical Specifications

What's Included

• One genuine iDatalink Maestro HRN-AR-TO3 harness package
• Manufacturer-supplied harnesses and components shown for this exact current part number
• Interface module, amplifier, DSP, power wiring, speakers, optional signal adapters, and installation materials are not included unless expressly stated

Source Clarification

The current myFirstech record is stored under MPN HRN-AR-TO3 and its overview identifies Toyota/Subaru applications, but its page title and URL incorrectly say TO2 and Toyota/Lexus. The official MPN, overview, current coverage records, and corroborating TO3 sources were used; the erroneous title was rejected.

Fitment disclaimer: Compatibility is not determined by year and model alone. Verify the exact year, make, model, trim, factory radio, navigation, amplifier/audio package, screen, connector, selected Maestro interface, firmware, DSP/amplifier, and accessories before ordering. Product photos show the listed part; surrounding equipment may be pictured for application context and is not included. Contact MCOR Automotive through the chat button for application help.

Why Buy From MCOR Automotive

• Authorized iDatalink Maestro retailer with manufacturer-backed warranty support
• Vehicle-specific compatibility help before purchase
• Professional car-audio integration, tuning, and installation support