Subaru WRX Horn Wiring Harness - GrimmSpeed - Hella - 2015+. A clean, plug-and-play solution to power Hella horns on your WRX without cutting factory wiring.

Engineered for 2015+ Subaru WRX and WRX STI, this GrimmSpeed harness provides a reliable, relayed, and fused power path from the battery, ensuring strong, consistent horn output. OEM-style connections interface with the stock horn trigger, preserving full steering wheel button functionality. Thoughtful wire lengths, protective loom, and quality terminals help you route everything neatly and install with confidence, whether you are upgrading for daily driving or preparing for spirited weekend runs.

Features

• Vehicle-specific fit for 2015+ WRX/WRX STI
• Plug-and-play integration with factory horn circuit
• Relay and fused power for stable performance
• Quality sheathing and terminals for durability
• Compatible with popular Hella horn sets

Have questions about compatibility or install? Call our Austin shop at 512-982-9393 or our Los Angeles area shop at 562-981-6800. We offer installation and customization services at both locations.

If you are considering multiple items, contact us for potential shipping discounts. We install on premises at both locations.

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