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Black rectangular T-harness with multiple coloured wires and connectors

iDatalink

iDatalink HRN-HRR-TO1 T-Harness 2005-2019 Toyota Scion

SKU CH-MS5T-CNN9C

T-harness enables aftermarket stereo installation in 2005-2019 Toyota and Scion vehicles while retaining steering wheel controls.

  • TypeRadio Replacement Harness Kits
  • FeaturesDesign for select Toyota vehicles
  • Retains steering wheel audio controls with any car stereo
  • Keeps factory amplifier and backup camera working after upgrade
  • Compatible with 2005-2019 Toyota and Scion vehicles
  • Requires Maestro ADS-MRR or ADS-MRR2 module for operation
  • Preserves vehicle settings menu with IDatalink-ready stereo

Toyota Scion Radio Harness 2005-2019

The iDatalink HRN-HRR-TO1 T-harness connects an aftermarket stereo to select Toyota and Scion vehicles built between 2005 and 2019. It is designed for owners who want to replace the factory radio while keeping the original steering wheel audio controls, factory amplifier and backup camera.

Plug-In Installation With Required Module

The harness plugs directly into the vehicle wiring behind the dash, so no cutting or splicing of the factory loom is needed. It will not function on its own; the Maestro ADS-MRR or ADS-MRR2 module must be purchased separately and programmed for the specific vehicle before the harness will communicate with the new stereo.

Verify Vehicle And Stereo Compatibility First

Confirm that your exact model year and trim fall within the 2005-2019 Toyota or Scion application list for this harness. Ensure the replacement stereo is IDatalink-ready so the Maestro module can retain features such as the vehicle settings personalisation menu and on-screen performance gauges.

Highlights

  • Retains steering wheel audio controls with any car stereo
  • Keeps factory amplifier and backup camera working after upgrade
  • Compatible with 2005-2019 Toyota and Scion vehicles
  • Requires Maestro ADS-MRR or ADS-MRR2 module for operation
  • Preserves vehicle settings menu with IDatalink-ready stereo

Specifications

BrandIDatalink
TypeRadio Replacement Harness Kits
FeaturesDesign for select Toyota vehicles

Questions about this item

How can I confirm the T-harness is correctly connected after installation?

Verify that steering wheel audio controls adjust volume and track selection, the factory amplifier powers the speakers, and the backup camera image appears on the new stereo when reverse is engaged.

What comes with the HRN-HRR-TO1 and what must be purchased separately?

The package includes the T-harness only; a Maestro ADS-MRR or ADS-MRR2 module and an IDatalink-ready aftermarket stereo are required separately for full functionality.

Which vehicles does the HRN-HRR-TO1 support?

It is designed for select Toyota and Scion models from 2005 through 2019; check the vehicle-specific Maestro compatibility list to confirm your exact model and trim are covered.

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