AutoMeter LS Plug and Play Tach Harness

2010–2025 LS Engine Swap / Automotive Performance

Part #: 2189

Overview

If you've undertaken an LS engine swap or are working on a vehicle with an LS-derived engine, you know how challenging it can be to get your tachometer functioning correctly. Many factory wiring setups require precise connections, and without the right tools, the process can be time-consuming and frustrating. The AutoMeter LS Plug and Play Tach Harness offers a straightforward, reliable solution to this common issue.

This harness is designed specifically for enthusiasts and professionals who want a hassle-free way to connect their tachometer to an LS engine without modifying or cutting into the factory wiring. It simplifies installation, saving you valuable time and reducing the risk of wiring errors or voiding warranties.

Key Features

The AutoMeter LS Plug and Play Tach Harness is engineered with the user in mind, combining quality construction with ease of installation. Here are some of its key features:

• OEM-spec connectors and wiring ensure a seamless, plug-and-play fitment directly onto your LS-derived engine.
• Designed to eliminate the need for splicing, cutting, or soldering, making installation quick and straightforward.
• Constructed with high-quality, durable wiring that withstands engine bay conditions, including heat and vibration.
• Compatible with a wide range of LS engines, including LS1, LS2, LS3, LS6, and more, across various vehicle applications.
• Supports accurate tach signal transmission, ensuring your gauge displays precise engine RPM readings.
• Reduces installation time from hours to minutes, allowing you to focus on other aspects of your build or repair.
• Ideal for street, performance, and racing applications where reliable tachometer operation is essential.

Construction & Design

The AutoMeter LS Plug and Play Tach Harness features a robust design with OEM-style connectors that guarantee a secure, vibration-resistant connection. The wiring is expertly shielded to prevent interference and signal loss, ensuring your tachometer receives a clean, accurate RPM signal. The harness is crafted with high-grade materials that resist heat and corrosion, providing long-lasting performance in demanding engine bay environments. Its compact, flexible design allows for easy routing and installation in tight spaces, making it suitable for a variety of vehicle configurations.

Performance & Sound

While this harness does not directly influence engine performance or sound, it plays a crucial role in ensuring your tachometer functions correctly, providing accurate RPM readings during spirited driving or racing. Reliable tach signal transmission helps you monitor engine performance precisely, aiding in tuning and troubleshooting efforts.

Installation & Fitment

The AutoMeter LS Plug and Play Tach Harness is designed for a straightforward, bolt-on installation. Simply connect the OEM-style connectors from the harness to your LS engine's existing wiring harness and your tachometer. No cutting, splicing, or special tools are required, making it accessible for both professional installers and DIY enthusiasts. The harness is compatible with a wide range of LS engines and vehicle models, ensuring versatile fitment across many applications. Installation typically takes only a few minutes, and detailed instructions are included to guide you through the process.

• Plug-and-play design for quick installation
• No cutting, splicing, or soldering required
• OEM-style connectors ensure a secure fit

What's Included

• AutoMeter LS Plug and Play Tach Harness
• Installation instructions

Ideal For

• LS engine swap projects
• Performance enthusiasts seeking reliable tachometer operation
• Professional automotive technicians
• Restoration and custom builds involving LS engines

Emissions Note

This product is designed for off-road use and is not intended for vehicles registered for street use in emissions-controlled environments. Please verify compatibility with your local regulations before installation.