Description
The Speedhut 2-1/16″ 12K RPM Tachometer (L2-TC5-LEG) is a precision instrument designed to deliver accurate engine speed readings in a compact and reliable format. Suitable for a variety of vehicles with standard spark plug ignition systems, this tachometer supports engines ranging from 1 to 12 cylinders. The 2 1/16-inch size fits easily into standard 52mm gauge openings, and its 0-12,000 RPM range ensures broad compatibility with performance and daily driver applications. Complete with wiring harnesses and a mounting ring, installation is made straightforward for both professional and DIY use.
KEY FEATURES AND BENEFITS:
- Wide Compatibility: Supports 1 to 12 cylinder engines for broad application across many vehicle types.
- Accurate RPM Measurement: Displays a full 0–12,000 RPM range for precision monitoring.
- Standard Fitment: Compact 2 1/16 inch size fits standard 52mm gauge openings.
- Simple Wiring: Includes 3 ft power & lighting harness and 8 ft tachometer harness for easy setup.
- Reliable Signal Input: Designed for use with the negative side of the ignition coil or ECU tach output.
- Professional Mounting: Includes a secure mounting ring for a flush dashboard installation.
SPECIFICATIONS:
- Gauge Type: Tachometer
- Compatibility: 1-12 cylinder engines
- Range: 0 – 12,000 RPM
- Size: 2 1/16 inch
- Hole Size: 2.062 inches (52mm)
- Internal Shift Light: No
- Gauge Mounting Ring: Included
- Ships With:
- 3 ft Power & Lighting Harness – for LED Lit Gauges and Clocks
- 8 ft Tachometer Harness – for LED Lit Gauges (1 Wire 2 Pin Connector)
HOW TO USE:
- Prepare the Mounting Location: Ensure a 2.062 inch (52mm) hole exists in the dashboard or gauge pod.
- Connect the Power and Lighting Harness:
- Red wire to +12V accessory power (switched ignition).
- Black wire to chassis ground.
- White wire to +12V dash lighting circuit (if gauge illumination is desired).
- Connect the Tachometer Signal Harness:
- Yellow wire to tach signal source:
- Negative (-) side of ignition coil for standard systems.
- ECU tach output for compatible ECUs (refer to vehicle wiring diagram).
- Yellow wire to tach signal source:
- Mount the Tachometer: Insert into the 52mm hole and secure with the included mounting ring from behind the panel.
- Verify Connections: Check all connections are secure and insulated properly.
- Test the Tachometer: Start the engine and confirm RPM readings are displayed correctly.
BENEFITS OF USING THE SPEEDHUT 2-1/16″ 12K RPM TACHOMETER (L2-TC5-LEG):
- RPM Monitoring: Helps avoid engine over-revving and potential damage.
- Improved Shifting: Provides accurate RPM data for optimal gear changes in manual transmission vehicles.
- Performance Tuning: Enables fine-tuning and peak performance tracking for enthusiast driving.
- Compact Fit: Integrates easily into dashboards without occupying excess space.
- Hassle-Free Installation: Comes with all necessary wiring and mounting hardware.
FEATURES:
- Clear 0 to 12,000 RPM scale for immediate engine speed visibility.
- Engineered for use with standard spark plug ignition systems.
- Compatible with engines from 1 to 12 cylinders.
- Compact 2 1/16 inch diameter for flexible mounting options.
- Includes dedicated 3 ft power & lighting harness for easy connection.
- Comes with an 8 ft tachometer signal harness and secure 2-pin connector.
- Secure installation using the included gauge mounting ring.





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