Grimmspeed Hella Horn Wiring Harness

Part #: 40005

Overview

The Grimmspeed Hella Horn Wiring Harness is a high-quality electrical accessory designed specifically for Subaru WRX and WRX STI models from 2002 to 2014. This wiring harness simplifies the installation of aftermarket Hella horns, ensuring a secure and reliable connection. Crafted for enthusiasts seeking improved sound and functionality, this harness enhances your vehicle’s horn system with ease and precision. It is ideal for those looking to upgrade their horn setup for a louder, clearer alert or custom sound profile, while maintaining factory safety and electrical standards. Constructed with durable wiring and high-quality connectors, the harness provides a clean, professional installation that minimizes wiring clutter and ensures consistent performance. Its design supports a straightforward, bolt-in replacement that reduces installation time and complexity, making it suitable for both novice and experienced automotive enthusiasts.

Key Features

This wiring harness features a robust design tailored to support aftermarket Hella horns, with a focus on durability and ease of use. Key features include:

• High-quality, insulated wiring for reliable electrical connections
• Pre-terminated connectors for quick installation
• Heavy-duty construction to withstand engine bay conditions
• Designed specifically for Subaru WRX and WRX STI models (2002-2014)
• Supports seamless integration with factory horn wiring
• Ensures consistent power delivery for optimal horn performance
• Includes all necessary hardware for installation

Construction & Design

The harness is built with high-grade, insulated wiring that resists heat, moisture, and vibration, ensuring long-lasting performance in demanding engine bay environments. The connectors are precision-molded to fit factory wiring harnesses securely, preventing accidental disconnections and electrical faults. Its compact, organized design facilitates a clean installation, maintaining the vehicle’s aesthetic integrity.

Installation & Fitment

Installation involves disconnecting the factory horn wiring and connecting the Grimmspeed harness in its place. The harness is designed for a direct bolt-in fit, compatible with Subaru WRX and WRX STI models from 2002 to 2014. Basic electrical knowledge is recommended, but the process is straightforward with included hardware and clear instructions.

What’s Included

The package includes the wiring harness, connectors, and all necessary mounting hardware required for a complete installation. Additional tools are not included but are typically standard automotive hand tools.

Ideal For

This harness is perfect for Subaru owners looking to upgrade their horn system with aftermarket Hella horns, ensuring a reliable and professional-grade electrical connection that enhances vehicle alertness and sound quality.