Maestro HRN-HRR-GM3 Radio Replacement T-Harness with Chime Speaker for Select GM Vehicles - 2014+

The iDatalink Maestro HRN-HRR-GM3 is a plug-and-play Radio Replacement T-Harness and chime speaker designed for use with the Maestro RR or RR2 interface module in select GM vehicles from 2014 and newer. This harness enables a clean, no-cut installation of an iDatalink-compatible aftermarket car stereo while preserving key factory features and vehicle functionality.

The HRN-HRR-GM3 connects directly to the vehicle's OEM radio connectors without splicing or modifying factory wiring. The radio side of the harness terminates in a universal connector compatible with Maestro Head Unit adapters for a simplified plug-and-play setup, or it can be used with conventional connections. Note: this harness is compatible with both non-amplified and amplified audio systems, but does not retain the factory amplifier — the factory amp must be bypassed.

Key Features:

• Plug-and-play T-harness — no cutting or splicing of factory wires required
• Includes chime speaker for retention of OEM warning chimes
• Retains steering wheel audio controls
• Retains OnStar with Bluetooth functionality
• Retains factory backup camera
• Retains vehicle customization options
• Displays engine performance data on compatible touchscreen receivers
• Works with iDatalink Head Unit adapters for most major radio brands
• Compatible with both non-amplified and amplified systems (factory amp must be bypassed)
• Requires Maestro ADS-MRR or ADS-MRR2 interface module (sold separately)

What's Included:

• Radio replacement T-harness
• Chime speaker
• Instruction manual

The Maestro ADS-MRR or ADS-MRR2 module is required for proper operation and is sold separately. Refer to the iDatalink Maestro vehicle fit guide to confirm feature coverage for your specific vehicle and audio configuration.