DESCRIPTION
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Speaker-level T-harness designed for select Toyota and Lexus vehicles with factory audio systems (non-JBL or standard amplified variants depending on model)
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Allows plug-and-play access to speaker wiring for adding amplifiers, DSP processors, or upgraded speakerswithout modifying OEM wiring.
FEATURES
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No cutting or splicing — preserves factory wiring integrity
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Provides clean speaker-level signal for full-range re-amplification or DSP integration
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Maintains all factory functions including:
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Bluetooth® audio
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Navigation prompts
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Backup sensor / chime audio
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Ideal for OEM+ sound upgrades, re-amp systems, or adding a subwoofer amplifier
FUNCTIONAL APPLICATIONS
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Add a sub amplifier while retaining the factory head unit
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Supply high-level input signal to aftermarket DSP
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Replace or re-amplify factory speakers using aftermarket power
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Supports amp bypass configurations (when combined with amp power relocation)
SPECIFICATIONS
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Harness Style: Inline T-Harness (Plug In + Pass Through)
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Audio Signal Type: High-Level / Speaker-Level
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Conductor Material: Multi-strand copper, OEM color-coded
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Connector Style: Toyota / Lexus factory audio connectors
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Wiring Jacket: Heat-stable, abrasion-resistant vehicle-grade insulation
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No impact to data bus, CAN, or vehicle electronic control systems
INSTALLATION NOTES
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Installs at the factory amplifier or head unit location, depending on vehicle and trim
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Always verify connector matching before installation
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When connecting to DSP units, set processor inputs to high-level mode
FITMENT
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Designed for select Toyota & Lexus vehicles with supported factory audio harness configuration
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Frequently used in:
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Tacoma / Tundra / 4Runner / Camry / Highlander / Corolla
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Lexus ES / GS / RX / GX
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Fitment depends on OEM amplifier / radio connector style — verify connector shape to confirm.
INCLUDES
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APH-TY01 T-Harness
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Quick reference installation documentation (varies by production batch)