Speedhut 4″ 4K RPM Shift-light Diesel Tachometer (R4-TC7-REV)

The Speedhut 4″ 4K RPM Shift-light Diesel Tachometer (R4-TC7-REV) is a precise and reliable instrument designed specifically for monitoring the engine speed of diesel vehicles. Featuring a clear 4-inch display and an integrated shift light, this gauge helps drivers optimize performance and prevent engine over-revving. Its compatibility with multiple diesel signal types ensures broad application across various vehicles.

KEY FEATURES AND BENEFITS:

• Accurate RPM Monitoring: Provides precise readings of your diesel engine’s revolutions per minute up to 4,000 RPM.
• Integrated Shift Light: Offers a visual cue for optimal gear changes, enhancing driving performance and efficiency.
• Versatile Signal Compatibility: Works with alternator (‘R’ or ‘W’ terminal), crank sensor signal, and magnetic pulse sensor inputs, ensuring compatibility with a wide range of diesel engines.
• Standard Unit Measurement: Displays readings in standard units.
• Convenient Size: The 4-inch gauge offers excellent visibility while fitting standard instrument panel configurations.
• Easy Installation: Designed for a 3.93-inch (100mm) mounting hole.
• Complete Wiring Included: Ships with both power/lighting and tachometer harnesses for a straightforward installation process.

SPECIFICATIONS:

• Gauge Type: Tachometer
• Signal Type: Diesel (alternator ‘R’/’W’ terminal, crank sensor, magnetic pulse sensor)
• Range: 0 – 4000 RPM
• Size: 4 inches
• Hole Size: 3.93 inches (100mm)
• Internal Shift Light: Yes
• Included: 3 ft Power & Lighting Harness (for LED Lit Gauges and Clocks), 8 ft Htz Tachometer Harness (LED Lit)

HOW TO USE:

1. Mount the Gauge: Locate a suitable 3.93-inch (100mm) diameter opening in your vehicle’s dashboard or instrument panel and securely mount the Speedhut tachometer.
2. Connect the Power and Lighting Harness: Connect the 3 ft Power & Lighting Harness to a suitable power source in your vehicle, ensuring proper polarity. This harness will also power the LED illumination of the gauge.
3. Connect the Tachometer Signal Harness: Based on your diesel engine’s available signal output, connect the 8 ft Htz Tachometer Harness to the appropriate terminal:
   • Alternator: Connect to the ‘R’ or ‘W’ terminal on your alternator.
   • Crank Sensor: Connect to the designated RPM output wire from your crank position sensor.
   • Magnetic Pulse Sensor: Connect to the signal output wire from your magnetic pulse sensor.
4. Ground the Gauge: Ensure the gauge has a proper ground connection for accurate readings.
5. Test Functionality: Start your vehicle and observe the tachometer reading to confirm proper operation. Verify the shift light illuminates at the desired RPM (if adjustable, refer to the Speedhut documentation for setting instructions).

BENEFITS OF USING THE SPEEDHUT 4″ 4K RPM SHIFT-LIGHT DIESEL TACHOMETER (R4-TC7-REV):

• Improved Driving Performance: The shift light provides timely cues for gear changes, allowing for optimal acceleration and power delivery.
• Enhanced Fuel Efficiency: Shifting at the right RPM can contribute to better fuel economy.
• Engine Protection: Monitoring RPM helps prevent over-revving, which can lead to engine damage.
• Accurate Engine Speed Readings: Provides a precise indication of your diesel engine’s operating speed.
• Clear and Easy-to-Read Display: The 4-inch size ensures excellent visibility of the RPM readings.
• Simplified Installation: The included wiring harnesses streamline the installation process.

FEATURES:

• Specifically calibrated for diesel engine RPM ranges up to 4000.
• Integrated internal shift light for immediate visual shift prompts.
• Compatible with alternator ‘R’ or ‘W’ terminal signals.
• Accepts input from crank position sensors.
• Reads signals from magnetic pulse sensors.
• Displays measurements in standard units.
• Requires a 3.93″ (100mm) diameter mounting hole.
• LED backlighting for enhanced visibility.
• Includes a 3-foot power and lighting connection cable.
• Comes with an 8-foot tachometer signal connection cable.