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iDatalink HRN-RR-TO2 Factory Integration Adapter

Connect a new car stereo and retain steering wheel controls and factory amp in select Toyota-made vehicles

Item # 794HRRTO2

iDatalink's HRN-RR-TO2 wiring adapter works in conjunction with iDatalink's Maestro ADS-MRR module, allowing you...

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iDatalink's HRN-RR-TO2 wiring adapter works in conjunction with iDatalink's Maestro ADS-MRR module, allowing you...

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About the iDatalink HRN-RR-TO2 Factory Integration Adapter

iDatalink's HRN-RR-TO2 wiring adapter works in conjunction with iDatalink's Maestro ADS-MRR module, allowing you to connect a new car stereo in select 2012-up Toyota-made vehicles, Once connected, you'll retain the use of your steering wheel audio controls and your factory amp in these vehicles.

iDatalink working with Toyota

iDatalink's HRN-RR-TO2 wiring adapter works in conjunction with iDatalink's Maestro ADS-MRR module, allowing you to connect a new car stereo in select 2012-up Toyota-made vehicles, Once connected, you'll retain the use of your steering wheel audio controls and your factory amp in these vehicles.

The package includes connectors that plug in between the Maestro module and your factory radio's wiring plugs. You'll have to solder or splice together this harness's power/ground, illumination, speaker, and navigation output wires to the corresponding wires on your aftermarket receiver's wiring harness.

An iDatalink-ready car stereo takes full advantage of this harness

If you're buying a compatible iDatalink-ready car stereo, you'll enjoy the outstanding performance of your receiver, plus seamless touchscreen control over most of the factory features in select Toyota-built vehicles. You'll also appreciate the additional features added by the adapter, including the ability to view performance gauges and vehicle information on the radio screen.

Installation Note: The HRN-RR-TO2 adapter must be used with the iDatalink Maestro ADS-MRR module to connect any new car stereo to your Toyota-made vehicle.

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Product highlights:

  • allows installation of a new car stereo in select Toyota vehicles (also requires the Maestro ADS-MRR module)
  • retains the use of your steering wheel audio controls and factory amp
  • retains select factory features and displays performance data on touchscreen with select Alpine, JVC, Kenwood and Pioneer receivers
  • warranty: 1 year
  • Our 60-day money-back guarantee
  • MFR # HRN-RR-TO2

What's in the box:

  • 22" Vehicle/radio harness
  • 22" Backup camera harness
  • 50" OBD harness

Customer reviews

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iDatalink HRN-RR-TO2 Factory Integration Adapter reviews

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More details on the iDatalink HRN-RR-TO2 Factory Integration Adapter

Stacey B.

Product Research

Features

Toyota Harness: The iDatalink Maestro HRN-RR-TO2 installation harness greatly simplifies the installation of the Maestro RR Car Radio Replacement Interface module (794ADSMRR, sold separately) in select Toyota 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-TO2 installation harness requires the purchase of the iDatalink Maestro RR (794ADSMRR).

Vehicle Compatibility Chart: Click here for a list of compatible Toyota 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 Features: The following factory features (if applicable) are retained when replacing your factory radio with a compatible iDatalink Serial Port head unit from Kenwood, JVC, Alpine, or Pioneer using the Maestro RR Car Radio Replacement Interface module and HRN-RR-TO2 installation harness.

  • Analog or Digital Amp (with Turn On, Fader, & Gain)
  • Vehicle settings personalization menu
  • Auxiliary AV input
  • Backup camera
  • Steering Wheel Controls

Note: When installing an aftermarket head unit without the iDatalink Serial Port, only steering wheel control & amplifier turn-on 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 HRN-RR-TO2 installation harness.

  • Performances Gauges (user selectable)
  • Vehicle Information (Tire Pressure, Battery Voltage, Door Open, & Check Engine Codes)

Connections: The iDatalink Maestro HRN-RR-TO2 installation harness contains four Molex connectors which plug into your factory radio harness. On the other end of the harness are three multi-pin connectors which plug into the Maestro RR Car Radio Replacement Interface module (794ADSMRR, sold separately). In addition, you will need to hardwire the power/ground, illumination, speaker, and navigation output leads of the HRN-RR-TO2 harness to your aftermarket head unit's wiring harness. There is also a composite video RCA connector which plugs into your aftermarket head unit's backup camera input. And, composite video/stereo RCA connectors that plus into your aftermarket receiver AV input. In addition, stereo RCA connectors connect to your aftermarket head unit's front-channel pre-outs.

Note: When using the HRN-RR-TO2 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
For complete operation [ NORMAN  Oct 26, 2019 ]
A
Needed [ Robert  Jun 26, 2019 ]
A
2018 Highlander Platinum Hybrid, the factory amplifier is under the console, not under the passenger seat. This will hook my DSR-1 into the factory system and allow me to use factory speaker wires for a factory look system. [ Dan  Apr 11, 2019 ]
A
Recommended [ David  Mar 09, 2019 ]
A
recommenced build by Crutchfield. They helped me build out my last stereo Crutchfield for the win!! [ coty  Feb 01, 2019 ]
A
Steering wheel controls to stay the same. [ James  Jan 06, 2019 ]
A
To enable the OEM feature of my kenwood KNN992 [ john  Jan 05, 2019 ]
A
It was part of the recommended package [ Joshua  Dec 31, 2018 ]
A
to connect to stand setup in car. [ thomas  Dec 06, 2018 ]
A
To facilitate replacement of factory head unit with aftermarket unit. [ Mark  Nov 20, 2018 ]
A
Steering wheel integration [ Bryan  Sep 15, 2018 ]
A
With this item I will be able to integrate the car data into the receiver. [ J Del Solar  Sep 03, 2018 ]
A
Seamless integration. [ Anthony  Aug 17, 2018 ]
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Recommended from Eric [ Joshua  Jul 22, 2018 ]
A
Allows programmability. Not like some other adapters which come with a factory set of codes that work on some buttons but not all of them. [ Albert  Jul 18, 2018 ]
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You recommended it [ William  Jul 02, 2018 ]
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To Maintain steering wheel controls and backup cam. [ Donald  Jun 27, 2018 ]
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Didn't want to lose any features from my old stereo upgrading to the new one. [ CRAIG  Jun 19, 2018 ]
A
It was referred to me when looking at the actual idatalink maestro that I would need a vehicle specific harness. [ Eric John  Jun 03, 2018 ]
A
Connect the Maestro to the car guy [ Kevin  Apr 14, 2018 ]
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supposed to be the best product for the job [ K  Mar 31, 2018 ]
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Want to keep factory options [ ANGEL  Feb 06, 2018 ]
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I needed to keep factory options and I wanted to use tire pressure sensors to full capabilities. [ Kevin  Jan 26, 2018 ]
A
One of the recommended accessories. Want to retain factory features and remote controls [ Rico Suave  Jan 01, 2018 ]
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Ease of use [ Mitch  Nov 19, 2017 ]
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I need it. [ MICHAEL W  Nov 10, 2017 ]
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Ease of implementation [ Scott  Sep 18, 2017 ]
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before ordered its says s 2day shipping in NJ... thats y i choosed crutchfield. thank you for fast shipping [ Jalal  Aug 10, 2017 ]
A
Maintain steering wheel controls [ Thomas  Jun 15, 2017 ]
A
To retain factory steering wheel controls [ Ryan  Apr 28, 2017 ]
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Crutchfield said it was needed for my aftermarket GPS in-dash receiver. [ Brooks  Mar 14, 2017 ]
A
I chose this adapter to connect a Pioneer AVH-4200NEX to a 2016 Toyota Camry, through an idatalink Maestro Rr unit. the amount of time saved and not having to splice wires in a brand new car was well worth the investment. [ Joseph  Feb 28, 2017 ]
A
To retain factory settings after changing out my stereo [ Leslie  Aug 26, 2016 ]
A
I literally look everywhere for a OE Integration Adapter for my application, I though I would find it cheaper near me. Why did I do that It's beyond me, a total waste of time, and time is money! From now on I'll start my search in Crutfield, period! [ Nelson  Mar 15, 2016 ]
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5 questions already asked

Q
Will this retain the factory microphone for bluetooth calls?
[ Jonathan  Jul 02, 2019 ]
3 answers
A
No. You have to run the microphone that comes with your new head unit.
[ Darren  Jul 02, 2019 ]
A
In my 2016 Tacoma it didn't it may be different in other makes but I had to use the microphone that came with the aftermarket radio
[ Bryan  Jul 02, 2019 ]
A
No, it does not. The OEM mic is a powered unit and the interface does not provide power for the mic. You need to install and use the mic that comes with your new HU.
[ Richard  Jul 02, 2019 ]
Q
Can this kit be used for installing a 5-channel amp on a 2017 corolla? It looks like the plugs can be plugged into the factory radio and the kit RCA plugs (4 channels) can be connected to the AMP inputs. The 4-channel outputs from the amp can then be connected to the kit and the original factory plugs for speakers (disconnected from the factory radio) can be plugged into the socket connectors in the kit. If the above is correct, I can used it for my amp to power the factory speakers and the added subwoofer. Please advise, thanks.
[ Tom  Jan 28, 2019 ]
4 answers
A
That wiring harness is for the Maestro Rr It's not going to help you connect a 5 channel amp to a factory head unit. I have videos on YouTube on how to add amps to a 2014 Corolla. Just search my name Chris .
[ Chris  Jan 30, 2019 ]
A
Yes
[ darius  Jan 30, 2019 ]
A
No. This kit is for installing the iDatalink MaestroRR vehicle interface module between the vehicle and an aftermarket HU. 4 of the RCA connectors that you see are cut off during installation into the Corolla. There are parallel wires that connect to the new HU's speaker outputs. The harness output connects to the vehicle harness. The other 2 RCA connectors are for the backup camera and aux video input.
[ Richard  Jan 30, 2019 ]
A
Unfortunately the answer is probably no if you are trying to keep your factory radio. The plugs that connect to the car are all female and accept the wires from the car that plug into the radio. It doesn't come with the male ends that plug back into the factory radio. The "output" ends are just wire that would normally be soldered to the harness that would come with an after market head unit. So in the end, this is not the harness you are looking for if you are looking to keep your factory head unit. This may also need the Maestro RR to work properly. Maybe look into finding a male and female plug (2 different plugs) that you can splice together and have the audio lines coming out of that? I would check with a corolla forum for what others have done for this type of project if Crutchfield can't answer this specific project. I don't know your specifc model so it's hard to search for the plugs to see if they even exist but it looks like others have done this to create a homemade plug and play harness. Good Luck!
[ AARON  Jan 30, 2019 ]
Q
Does this retain Birdseye view camera functionality on a 2017 RAV4 Limited? If so, will it act the same?(camera shows up when you slow down, or put it in reverse etc)
[ VTECMAN  Jan 04, 2019 ]
2 answers
A
If you kept the factory camera, it will have the same view. It should also work when you are in reverse gear. If you have replaced the factory Info-tainment unit with a Pioneer model, you can manually select to display the camera view all the time and it does offer a timer to flash between the camera and the current mode the Info-tainment center is in. It will not automatically turn the camera on when slowing down.
[ Peter  Jan 04, 2019 ]
A
I have no idea, but I can tell you that I very much regret purchasing the Kenwood head unit this came with. I am now on my second Kenwood and will never purchase another of their products. They are buggy, crash a lot, and their companion apps all have a ton of one star reviews for a reason.
[ James  Jan 04, 2019 ]
Q
Will this work on 2007 Toyota Avalon XLS?
[ Uzondu  May 26, 2017 ]
1 answer
A
You can check to see if this will fit your vehicle by using our Outfit My Car tool: http://www.crutchfield.com/car/carselector.aspx For additional details on fit or installation please contact an Advisor by phone (1-800-324-9695) or online chat. They will be able to pull up your vehicle and give you the details on if this will fit and what you will need for an installation in your vehicle.
[ Krissy  May 26, 2017 ]  Staff
Q
Does this retain the factory back up camera?
[ Brian  Feb 10, 2017 ]
11 answers
A
Yes it will
[ Leslie  Feb 11, 2017 ]
A
No. I had to install a separate one to work with the Apple Play Pioneer head unit
[ B  Feb 11, 2017 ]
A
I had an aftermarket camera that displayed through the toyota factory unit, and when I replaced it with the idatalink and a new unit, it still worked.
[ Peter  Feb 10, 2017 ]
A
Yes, worked like a charm.
[ John  Feb 10, 2017 ]
A
Yes it does but it does not retain the factory radio antenna so before installation make sure to get that.
[ Brent  Feb 10, 2017 ]
A
Yes but it don't when you put it in reverse but I didn't hook up the reverse wire . So it works but you have to access through menu on Kenwood head unit
[ ROBERT  Feb 10, 2017 ]
A
Based on 2015 RAV4 and 2016 Corolla. Yes, also adds tire pressure and all sorts of other gauges.
[ Carlos  Feb 10, 2017 ]
A
Yes it does. I installed it on a 2014 Toyota Tundra.
[ Juan  Feb 10, 2017 ]
A
Yes
[ Anthony  Feb 10, 2017 ]
A
Yes, the factory camera works with this installed.
[ Brian  Feb 10, 2017 ]
A
I didn't have a factory camera but I did add my own. I do know that the instructions that came with this adapter included a way to re-use the factory camera at least for my car (2012 Camry).
[ Syed Danish  Feb 10, 2017 ]
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