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iDatalink HRN-RR-GM2 Interface Harness

Connect a new car stereo and retain steering wheel controls, OnStar®, factory amp, and warning chimes in select 2010-up GM-made vehicles (ADS-MRR module also required)

Item # 794HRRGM2

iDatalink's HRN-RR-GM2 wiring adapter allows you to connect a new car stereo in select 2010-up GM vehicles,...

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iDatalink's HRN-RR-GM2 wiring adapter allows you to connect a new car stereo in select 2010-up GM vehicles,...

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Item # 794HRRGM2

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$39.99

About the iDatalink HRN-RR-GM2 Interface Harness

Keep your GM factory features

iDatalink's HRN-RR-GM2 wiring adapter allows you to connect a new car stereo in select 2010-up GM vehicles, working in conjunction with iDatalink's Maestro ADS-MRR module. Once connected, you'll retain the use of your steering wheel audio controls in these vehicles, as well as your warning chimes, OnStar, factory amplifier, and park assist feature. If you're installing an iDatalink-ready car stereo, you'll also keep your Bluetooth, USB media player, backup camera, and the Retained Accessory Power feature (RAP).

Keep your GM factory features

iDatalink's HRN-RR-GM2 wiring adapter allows you to connect a new car stereo in select 2010-up GM vehicles, working in conjunction with iDatalink's Maestro ADS-MRR module. Once connected, you'll retain the use of your steering wheel audio controls in these vehicles, as well as your warning chimes, OnStar, factory amplifier, and park assist feature. If you're installing an iDatalink-ready car stereo, you'll also keep your Bluetooth, USB media player, backup camera, and the Retained Accessory Power feature (RAP).

Works with the Maestro module

The package includes connectors that plug in between the Maestro module, your factory radio's wiring plugs, and the serial port on your new car stereo (if present). You'll have to solder or splice together this harness's power/ground, illumination, and speaker wires to the corresponding wires on your aftermarket receiver's wiring harness.

Installation note: The HRN-RR-GM2 adapter must be used with the iDatalink Maestro ADS-MRR module to connect a new car stereo to your General Motors vehicle. 

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Product highlights:

  • allows installation of a new receiver in select GM vehicles (also requires the Maestro ADS-MRR module)
  • retains the use of your steering wheel audio controls, OnStar®, factory amp, and warning chimes with any car stereo
  • also retains Bluetooth, USB media player, backup camera, and Retained Accessory Power with an iDatalink-ready radio
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # HRN-RR-GM2

What's in the box:

  • Vehicle harness
  • Backup camera harness
  • External chime module
  • OBDII harness
  • High-level front speaker harness
  • High-level rear speaker harness
  • Jumper harness

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More details on the iDatalink HRN-RR-GM2 Interface Harness

Stacey B.

Product Research

Features

GM Harness: The iDatalink Maestro HRN-RR-GM2 installation harness greatly simplifies the installation of the Maestro RR Car Radio Replacement Interface module (794ADSMRR, sold separately) in select GM vehicles when replacing your factory radio with an iDatalink Serial Port compatible head unit from Kenwood, JVC, Alpine or Pioneer (click here for a list of fully compatible radios); or other aftermarket head unit.

Notes: The iDatalink Maestro HRN-RR-GM2 installation harness requires the purchase of the iDatalink Maestro RR (794ADSMRR).

Vehicle Compatibility Chart: Click here for a list of compatible GM vehicles.

Flashing Module via Weblink Desktop: The iDatalink Maestro RR (ADS-MRR) will need to be loaded with correct firmware before installation. The included USB cable plugs into your computer and allows you to "flash" the Maestro RR with the appropriate firmware to prepare it for installation. Simply download Weblink Desktop (for Windows and Mac) onto your computer to access the appropriate firmware. System requirements include -

  • Windows PC (10/8.1/8/7/Vista/XP/2000) or Mac OS X (Mojave [10.14], HighSierra [10.13], Sierra [10.12], El-Capitan [10.11])
  • Available USB port (version 2.0 or 3.0)
  • 4GB RAM or more
  • 200MB available space on HDD
  • Internet connection

Retained Factory Features: When installing select Kenwood, JVC, Alpine, & Pioneer in-dash receivers which contain an iDatalink serial port, the HNR-RR-GM2 harness along with the iDatalink Maestro RR interface module allows you to retain the following GM factory features (if applicable).

  • Steering Wheel Controls
  • OnStar Service & Bluetooth Hands-Free
  • Analog & Digital Amplifier with Turn-On, Fader, DSP, and Gain
  • USB Media Player
  • Factory installed backup camera
  • RAP & Warning Chimes (external chime module included)
  • Rear Seat Entertainment (requires AVGM2 harness; sold separately)
Note: When installing an aftermarket head unit without the iDatalink Serial Port, only steering wheel control, OnStar, factory amplifier, warning chimes, park assist are retained.

Extra Features: The following Extra features are added when replacing your aftermarket head unit with a compatible iDatalink Serial Port head unit from Kenwood, JVC, Pioneer, or Alpine using the Maestro RR Car Radio Replacement Interface module and HNR-RR-GM2 harness.

  • Performances Gauges
  • Vehicle Information (TPMS, Doors, Check Engine)
  • On-Screen Parking Sensor Display

Connections: The iDatalink Maestro HRN-RR-GM2 vehicle harness includes one large Molex connector which plug into your GM factory radio harness. On the other end of the harness are four multi-pin connectors which plug into the Maestro RR Car Radio Replacement Interface module (794ADSMRR, sold separately). In addition there are two 4-pin connectors which plug into the included high-level front and rear speaker harnesses. There is also a back-up camera composite video output jack which plugs into the camera input on your aftermarket head unit. In addition, you will need to hardwire the power/ground, illumination, speaker, and navigation output leads of the HRN-RR-GM2 harness to your aftermarket head unit's wiring harness.

Note: When using the HRN-RR-GM2 installation harness, you will not use the additional harnesses that are included with the Maestro RR Car Radio Replacement Interface module (794ADSMRR, sold separately).

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Customer Q&A

Q
Crutchfield asked: Why did you buy this?
A
Compatible with 2014 Chevy Explorer conversion van with factory nav unit. [ LAN  Sep 06, 2018 ]
A
Required for install [ Jonathan  Jun 09, 2018 ]

1 question already asked

Q
Does the factory warning chime work after applying this product?
[ Ali  Jul 15, 2017 ]
2 answers
A
This interface harness provides an external speaker that chimes sound through. My specific radio allows adjustments via the Maestro RR to increase/decrease the volume of the chimes. The chimes that I hear out of the speaker include the normal door chimes, park assist, and turn signaling.
[ Corey  Jan 12, 2019 ]
A
You will want to contact an Advisor by phone (1-800-324-9695) or online chat to discuss compatibility with your factory system. They will be able to pull up your vehicle and see if this will integrate. If it does not, then they will also be able to discuss other options with you.
[ Kenny  Jul 17, 2017 ]  Staff

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