The iDatalink HRN-DSP-TO1 is a vehicle-specific T-harness designed for seamless integration of the Rockford Fosgate DSR1 Digital Signal Processor into select 2005-up Toyota, Scion, and Subaru vehicles without a factory amplifier. This plug-and-play harness eliminates the need for cutting factory wiring, making it easier to add aftermarket amplifiers, speakers, and advanced DSP tuning capabilities while retaining the factory radio. Features Designed for use with the Rockford Fosgate DSR1 Digital Signal Processor Fits select 2005-up Toyota, Scion, and Subaru vehicles without a factory amplifier Plug-and-play T-harness design for quick and reliable installation No factory wire cutting or splicing required Retains factory radio functionality Provides clean audio signal integration for aftermarket amplifiers Maintains factory wiring integrity Simplifies DSP and amplifier upgrades Reduces installation time and troubleshooting Ideal for complete audio system enhancements Specifications Part Number: HRN-DSP-TO1 Product Type: DSP Integration T-Harness Compatible Processor: Rockford Fosgate DSR1 Vehicle Compatibility: Select 2005-up Toyota, Scion, and Subaru vehicles without factory amplification Connection Type: Plug-and-Play Application: Factory radio integration for DSP and aftermarket amplifier installations Installation Location: Behind factory radio Warranty: Manufacturer Limited Warranty What's Included HRN-DSP-TO1 vehicle-specific T-harness Factory radio integration connectors DSR1 interface connections Installation documentation