--- product_id: 590252257 title: "Maestro HRN-HRR-TO3 T-Harness for Select Toyota 2018+ Connect a New iDatalink-Ready car Stereo and retain Steering Wheel Controls and Factory amp (ADS-MRR or ADS-MRR2 Module Also Required)" brand: "idatalink" price: "$155.60" currency: USD in_stock: true url: https://www.desertcart.us/products/590252257-maestro-hrn-hrr-to3-t-harness-for-select-toyota-2018 store_origin: US region: United States of America --- # Performance Data Display Plug & Play Design Steering Wheel Control Maestro HRN-HRR-TO3 T-Harness for Select Toyota 2018+ Connect a New iDatalink-Ready car Stereo and retain Steering Wheel Controls and Factory amp (ADS-MRR or ADS-MRR2 Module Also Required) **Brand:** idatalink **Price:** $155.60 **Availability:** ✅ In Stock ## Summary > 🚗 Upgrade Your Ride with Ease! ## Quick Answers - **What is this?** Maestro HRN-HRR-TO3 T-Harness for Select Toyota 2018+ Connect a New iDatalink-Ready car Stereo and retain Steering Wheel Controls and Factory amp (ADS-MRR or ADS-MRR2 Module Also Required) by idatalink - **How much does it cost?** $155.60 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/590252257-maestro-hrn-hrr-to3-t-harness-for-select-toyota-2018) ## Best For - idatalink enthusiasts ## Why This Product - Trusted idatalink brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **No Splicing Required:** Say goodbye to messy installations with our 'Head-unit Direct' harnesses. - • **Seamless Installation:** Experience effortless upgrades with our plug-and-play design. - • **Enhanced Functionality:** Access vehicle settings and performance data on select touchscreen receivers. - • **Retain Factory Features:** Keep your steering wheel controls and factory amp for a familiar feel. - • **Comprehensive Compatibility:** Works with major brands like Alpine, JVC, Kenwood, Sony, and Pioneer. ## Overview The IdatalinkMaestro HRN-HRR-TO3 T-Harness is designed for seamless installation of iDatalink-ready car stereos in select 2018+ Toyota vehicles. This harness retains essential factory features such as steering wheel controls and factory amp, while providing a plug-and-play solution that eliminates the need for splicing. Compatible with various major receiver brands, it enhances your vehicle's functionality and personalization options. ## Description IdatalinkMaestro HRN-HRR-TO3 T-Harness for Select Toyota 2018+ Connect a New iDatalink-Ready car Stereo and retain Steering Wheel Controls and Factory amp (ADS-MRR or ADS-MRR2 Module Also Required) ## Features - Allows installation of a new iDatalink-ready car stereo in select Toyota vehicles (also requires the Maestro ADS-MRR or ADS-MRR2 module). PLUG AND PLAY DESIGN: With dedicated plugs for quick, proper installation, this harness makes replacement of the factory radio seamless while retaining key compatible factory features. - Retains the use of your steering wheel audio controls and factory amp & retains vehicle settings personalization menu, backup camera, and rear seat entertainment system - Displays select factory features and displays performance data on touchscreen with select Alpine, JVC, Kenwood, Sony, and Pioneer receivers - Supplies parking brake, reverse, and speed sensor connections for touchscreen radios. Works with iDatalink's "Head-unit Direct" harnesses, eliminating need for splicing - INSTALLATION NOTE: This HRN-HRR Plug & Play Harness requires an Idatalink Maestro Interface Module (ADS-MRR or ADS-MRR2) and the corresponding Idatalink Maestro Car Stereo Head-Unit ACC-HU-ALP1 (Alpine), ACC-HU-PIO1 (Pioneer), ACC-HU-SON1 (S O N Y), ACC-HU-KEN1 (Kenwood/JVC with 22-Pin Connector) or ACC-HU-KEN2 (Kenwood/JVC with 16-Pin Connector) Installation T-Harness. Sold separately. (ADS-MRR: Vehicle Coverage: 30 Makes - Models: 4318 - Years: 2002+) (ADS-MRR2: Vehicle Coverage: 30 Makes - Models: 4582 - Years: 2002+ with 3 Programmable Outputs) ## Product Details - **Brand:** Idatalink - **Material:** Copper - **Item dimensions L x W x H:** 19.7 x 12.1 x 3.2 centimeters - **Item weight:** 0.2 Kilograms - **Cable type:** proprietary ## Images ![Maestro HRN-HRR-TO3 T-Harness for Select Toyota 2018+ Connect a New iDatalink-Ready car Stereo and retain Steering Wheel Controls and Factory amp (ADS-MRR or ADS-MRR2 Module Also Required) - Image 1](https://m.media-amazon.com/images/I/61gd1bAVIuL.jpg) ## Frequently Bought Together - iDatalink Maestro HRN-HRR-TO3 T-Harness for Select Toyota 2018+ Connect a New iDatalink-Ready car Stereo and retain Steering Wheel Controls and Factory amp (ADS-MRR or ADS-MRR2 Module Also Required) - Idatalink Maestro Acc-USB-TO3 USB Adapter UT03 - METRA Ltd 40-LX11 Antenna Adaptor Cable - Select 2009-Up Lexus/Toyota --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/590252257-maestro-hrn-hrr-to3-t-harness-for-select-toyota-2018](https://www.desertcart.us/products/590252257-maestro-hrn-hrr-to3-t-harness-for-select-toyota-2018) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-17*