AutoMeter Tachometer Adapter

Compatible with 2011–2025 vehicles / AutoMeter tachometers and RPM activated devices

Part #: 9118

Overview

The AutoMeter Tachometer Adapter (9118) is a specially designed, weatherproof module that provides a reliable and accurate signal for your vehicle's tachometer or RPM-activated devices. Engineered for enthusiasts and professionals alike, this adapter ensures seamless integration with modern ignition systems, especially those utilizing magneto ignition setups. Whether you're restoring a classic or tuning a performance vehicle, this adapter helps you monitor engine RPM with precision and confidence.

Built to withstand harsh underhood conditions, the AutoMeter Tach Adapter offers a robust solution for accurate tach signal conversion. Its fully potted, environmentally sealed design makes it resistant to moisture, vibration, and temperature fluctuations, ensuring consistent performance over time. This makes it an ideal choice for street, off-road, or racing applications where durability and reliability are paramount.

Key Features

The AutoMeter Tachometer Adapter is packed with features that enhance its performance and ease of use:

• Environmentally sealed and vibration resistant housing ensures durability in demanding underhood environments.
• Fully potted design protects internal circuitry from moisture, dust, and temperature extremes, extending the lifespan of the module.
• Compatible with modern, external coil magneto ignition systems, providing a clean, square wave 12V signal suitable for tachometers and RPM-activated devices.
• Measures 1.5 inches x 3 inches x 1 inch, making it compact and easy to install in tight spaces.
• Simple wiring setup with ground and kill switch terminals for straightforward integration.
• Designed to work with suppression style spark plug wires, ensuring compatibility with a wide range of ignition configurations.
• Vibration-resistant construction minimizes signal noise and ensures consistent readings during spirited driving or off-road use.
• Weatherproof design allows for underhood mounting without concern for exposure to the elements.
• Provides a reliable square wave signal that is compatible with AutoMeter tachometers and other RPM-activated devices, supporting accurate engine monitoring.

Construction & Design

The AutoMeter Tachometer Adapter features a fully potted, environmentally sealed housing that safeguards its internal electronics from moisture, vibration, and temperature variations. Its compact size and rugged construction make it suitable for underhood mounting in a variety of vehicle applications. The module's design ensures stable signal output, even in demanding conditions, helping you maintain accurate RPM readings during high-performance driving or off-road adventures. Its straightforward wiring terminals simplify installation, allowing you to quickly connect it to your ignition system and tachometer.

Performance & Sound

While this adapter does not directly influence engine performance or sound, it plays a crucial role in providing accurate RPM data, which can be essential for tuning, diagnostics, or monitoring engine behavior. Its reliable square wave output ensures your tachometer receives a clean signal, resulting in precise and consistent readings. This helps you optimize engine performance and maintain safe operating conditions during spirited driving or racing.

Installation & Fitment

The AutoMeter Tachometer Adapter is designed for easy bolt-on installation. It connects directly to your vehicle's magneto ignition system, with wiring terminals for ground and kill switch connections. No complex modifications or tuning are required, making it suitable for both DIY enthusiasts and professional installers. Its compact size allows for flexible mounting options in tight engine bays, and its weatherproof construction ensures long-lasting performance in various environments.

• Simple wiring to existing magneto ignition systems
• No cutting, drilling, or complex tuning necessary
• Ideal for custom builds, restorations, or performance upgrades

What's Included

• AutoMeter Tachometer Adapter (9118)
• Installation instructions

Ideal For

• Performance enthusiasts seeking accurate engine RPM monitoring
• Restorers and restorations involving magneto ignition systems
• Off-road and racing applications requiring durable, weatherproof signal modules
• Custom vehicle builds and tuning projects

Emissions Note

This product is designed for use with modern ignition systems and does not affect vehicle emissions. It is intended for off-road, racing, or show use only and is not a legal replacement for any OEM emissions control components.