Speedhut 4-1/2″ 4K RPM Shift-light Diesel Tachometer (R45-TC7-REV)

The Speedhut 4-1/2″ 4K RPM Shift-light Diesel Tachometer (R45-TC7-REV) is a specifically designed instrument for monitoring the rotational speed of diesel engines. This gauge provides accurate readings up to 4000 RPM and features an integrated shift light to aid in optimal gear changes for performance and efficiency. Its 4 1/2 inch size offers a clear and easily readable display, while the included harnesses ensure a straightforward installation process.

KEY FEATURES AND BENEFITS:

• This 4K RPM diesel tachometer is engineered for precision and ease of use.
• The internal shift light: provides a visual cue for optimal shift points, helping to maximize engine performance and prevent over-revving.
• Compatibility: with various diesel signal types, including alternator (with ‘R’ or ‘W’ terminal), crank sensor, and magnetic pulse sensor, making it versatile for many diesel vehicles.
• Display Size: The 4 1/2 inch display offers excellent visibility of the RPM readings.
• Included Harnesses: LED-lit harnesses simplify the wiring process.

SPECIFICATIONS:

• Gauge Type: Tachometer
• Signal Type: Diesel (alternator with an ‘R’ or ‘W’ terminal, crank sensor signal, magnetic pulse sensor)
• Range: 0 – 4000 RPM
• Size: 4 1/2 inch
• Hole Size: 4.23 inches (108mm)
• Internal Shift Light: Yes
• Ships With:
• 8 ft Htz Tachometer Harness (LED Lit)
• 3 ft Power & Lighting Harness – for LED Lit Gauges and Clocks

HOW TO USE:

1. Identify the appropriate signal source: on your diesel engine (alternator with an ‘R’ or ‘W’ terminal, crank sensor, or magnetic pulse sensor).
2. Mount the tachometer: in a suitable 4.23-inch (108mm) diameter opening in your vehicle’s dashboard or instrument panel. Secure it using the provided mounting hardware.
3. Connect the 8 ft Htz Tachometer Harness: to the designated signal output from your engine. Ensure proper wiring according to your engine’s specific wiring diagram and the Speedhut instructions. The LED lighting in this harness will illuminate.
4. Connect the 3 ft Power & Lighting Harness: to a suitable 12V power source and ground in your vehicle. This harness provides power to the gauge and the shift light.
5. Calibrate the tachometer: if necessary. Some diesel engines may require calibration to ensure accurate RPM readings. Refer to the Speedhut instructions for any calibration procedures.
6. Set the desired shift light RPM: The internal shift light can typically be adjusted to illuminate at a specific RPM to indicate the optimal time to shift gears. Consult the Speedhut instructions for setting the shift light.
7. Monitor the RPM readings: while your engine is running. The gauge will display the engine’s revolutions per minute. The shift light will activate when the set RPM is reached.

BENEFITS OF USING THE SPEEDHUT 4-1/2″ 4K RPM SHIFT-LIGHT DIESEL TACHOMETER (R45-TC7-REV):

• Allows precise monitoring of your diesel engine’s RPM, crucial for maintaining optimal performance and efficiency.
• The integrated shift light provides timely visual cues for gear changes, helping to prevent engine damage from over-revving and maximizing acceleration.
• The clear 4 1/2 inch display ensures easy readability of engine speed, even in varying light conditions.
• The included harnesses simplify the installation process, saving time and effort.
• Compatibility with multiple diesel signal types makes it a versatile solution for a wide range of vehicles.

FEATURES:

• Provides accurate RPM readings specifically for diesel engines.
• Features a built-in, adjustable shift light for performance monitoring.
• Offers a clear and easily visible 4 1/2 inch gauge face.
• Designed for straightforward installation with the included LED-lit harnesses.
• Compatible with alternator (‘R’ or ‘W’ terminal), crank sensor, or magnetic pulse sensor signals.
• Fits a standard 4.23-inch (108mm) mounting hole.
• LED lighting integrated into the tachometer harness.
• Includes a separate power and lighting harness for easy connection.