Speedhut 4″ 6K RPM Shift-light Diesel Tachometer (R4-TC8-REV)

The Speedhut 4″ 6K RPM Shift-light Diesel Tachometer (R4-TC8-REV) is a precise instrument designed to accurately display the engine speed of diesel vehicles. Its 4-inch (100mm) gauge face provides clear and easy-to-read RPM information up to 6,000. Featuring an integrated shift light, this tachometer helps drivers optimize their gear changes for improved performance and efficiency. It is compatible with various diesel engine signal sources, ensuring broad applicability. The included wiring harnesses simplify the installation process, making it a practical addition to any diesel vehicle.

KEY FEATURES AND BENEFITS:

• Clearly displays diesel engine speed up to 6,000 RPM: Allows for accurate monitoring.
• Features an internal shift light: Alerts the driver to optimal gear change points.
• Compatible with multiple diesel tachometer signal types: Includes alternator (R or W terminal), crank sensor signal, and magnetic pulse sensor.
• Fits standard 4-inch (approximately 100mm) dashboard openings: Ensures straightforward installation in many vehicles.
• Includes LED-lit wiring harnesses: For both the tachometer signal and power/lighting, enhancing visibility and simplifying connections.

SPECIFICATIONS:

• Standard or Metric: Standard
• Gauge Type: Tachometer
• Tachometer Signal Type: Diesel (alternator with an ‘R’ or ‘W’ terminal, crank sensor signal, magnetic pulse sensor)
• Range: 0–6,000 RPM
• Size: 4 inch (100mm)
• Hole Size: 3.93 inches (100mm)
• 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. Mount the Gauge: Locate a suitable 4-inch (100mm) opening in your dashboard. Secure the tachometer in place using the provided mounting hardware.
2. Connect the Power Harness: Connect the wires from the 3 ft Power & Lighting Harness to a 12V power source, ground, and the vehicle’s lighting circuit (if desired for illumination).
3. Connect the Tachometer Signal Harness: Connect the 8 ft Htz Tachometer Harness to the appropriate signal source on your diesel engine. This could be the ‘R’ or ‘W’ terminal on the alternator, the crank sensor signal wire, or the magnetic pulse sensor wire, depending on your engine type.
4. Ground the Tachometer: Ensure a solid ground connection for the tachometer, typically through the ground wire in the power harness.
5. Test Functionality: Start your vehicle and observe the tachometer reading to confirm it is accurately displaying the engine RPM.
6. Set the Shift Light (if applicable): Follow the manufacturer’s instructions to set the desired RPM at which the internal shift light will activate. This usually involves a configuration process using buttons or settings on the gauge itself.

BENEFITS OF USING THE SPEEDHUT 4″ 6K RPM SHIFT-LIGHT DIESEL TACHOMETER (R4-TC8-REV):

• Using this Speedhut tachometer provides drivers with a clear and immediate understanding of their diesel engine’s rotational speed.
• The integrated shift light offers a valuable visual cue for optimal gear changes, which can lead to improved fuel efficiency and engine performance.
• The compatibility with various diesel signal types ensures it can be used with a wide range of vehicles.
• The included LED-lit harnesses simplify the installation process.
• The gauge’s standard size allows for easy integration into existing dashboards.

FEATURES:

• Provides real-time and accurate readings of engine revolutions per minute.
• Offers a visual indication for optimal gear shifting through the built-in light.
• Designed to interface with different types of diesel engine speed signals.
• Constructed with a 4-inch diameter for clear visibility within the instrument panel.
• Engineered to fit into a standard 100mm (approximately 3.93 inch) dashboard cutout.
• Comes equipped with dedicated wiring harnesses that feature LED illumination.