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DESCRIPTION

  • Speaker-level T-harness designed for select Toyota & Lexus vehicles equipped with factory amplified audio systems

  • Allows plug-and-play access to speaker signal wiring for amplifier or DSP integration

  • Preserves OEM wiring — no cutting, no splicing

FEATURES

  • Enables addition of aftermarket amplifiers, DSP processors, or upgraded speakers while retaining factory head unit and system functions

  • Full-range speaker signal maintained through harness — suitable for active or passive upgrade paths

  • Maintains factory chimes, Bluetooth audio, navigation prompts, and vehicle safety tones

  • Ideal for OEM+ sound upgrades where reliability and reversibility are required

FUNCTIONAL APPLICATIONS

  • Add subwoofer amplifier while keeping factory interior speakers

  • Feed high-level signal to DSP for staging and equalization

  • Run new full-range amplifier power to factory speaker circuits (when supported)

  • Can support amp bypass or re-amplification configurations

SPECIFICATIONS

  • Harness Type: T-Harness (Inline Plug + Pass-Through)

  • Signal Type: Speaker-Level (high-level)

  • Connector Style: Toyota / Lexus OEM amplifier connectors

  • Conductors: Color-coded, multi-strand copper, matched to OEM mapping

  • Cable Jacket: Heat & abrasion resistant vehicle-grade insulation

  • Does not affect OEM data networks or MOST fiber systems (when present)

INSTALLATION NOTES

  • Installs at the factory amplifier location, typically behind dash side panels or rear quarter interior panels (vehicle dependent)

  • Always verify polarity and channel mapping when routing to aftermarket amps or DSPs

  • If adding a DSP, set input mode to high-level unless using line converters

FITMENT

  • Select Toyota and Lexus models equipped with factory amplified audio systems

  • Common applications include (varies by year/trim):

    • Tacoma / Tundra / 4Runner / Highlander / Camry

    • Lexus RX / ES / GX / LX

  • Fitment is confirmed by matching amplifier connectors, not by model name alone

INCLUDES

  • APH-TY02 T-Harness Assembly

  • Quick reference installation sheet (varies by batch)