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Product Description
Product Description
Alpine HRN-TSLA-M3B1 Plug-and-Play Harness for Tesla Model 3 with Factory Base Audio
The Alpine HRN-TSLA-M3B1 is a plug-and-play installation harness designed for integrating Alpine’s complete audio upgrade system into select Tesla Model 3 vehicles equipped with factory base audio. It connects directly to the factory system while helping retain the vehicle’s original features and controls.
Designed for Tesla Model 3 Audio Upgrades
The HRN-TSLA-M3B1 is specifically designed for the Alpine PSS-TSLA-M3B 13-speaker Complete Sound System Upgrade for 2017–2023 Tesla Model 3 models with factory base audio. It works with the PXE-X121-EV 12-channel DSP and amplifier to provide seamless integration of the upgraded audio system.
Plug-and-Play Installation
Forget about cutting and splicing factory wiring. The HRN-TSLA-M3B1 uses pre-configured connections that plug directly into the Tesla’s factory connectors, making installation cleaner and more straightforward. The harness is designed to maintain factory functionality while providing the connections needed for Alpine’s upgraded sound system.
Supports Multiple MCU Configurations
The harness supports both Intel and AMD MCU configurations, helping accommodate different Tesla Model 3 factory configurations.
Alpine Tesla VIN Decoder
Tesla audio configurations can vary, making fitment tricky. Alpine’s proprietary Tesla VIN Decoder helps take the guesswork out of selecting the right audio upgrade. Enter the vehicle’s VIN and manufacture date to confirm compatibility before installation.
What's Included
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Integration Harness: 1
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12V Amplifier Power Harness: 1
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Alpine Fuse Holder: Included
- Complete Your Tesla Audio Upgrade
The HRN-TSLA-M3B1 is an essential integration component for the compatible Alpine Tesla Model 3 sound system package. When paired with the appropriate Alpine components, it provides a clean connection between the factory audio system and upgraded amplification, DSP processing, and speakers—giving your Model 3 the foundation for a dramatically improved listening experience.
Note: For use with the Alpine PSS-TSLA-M3B system only.

