Speedhut 4-1/2″4K RPM Diesel Tachometer (L45-TC7-LEG)

Description

The Speedhut 4-1/2″ 4K RPM Diesel Tachometer (L45-TC7-LEG) is an essential instrument for monitoring the engine speed of your diesel vehicle. This analog gauge provides accurate and real-time readings up to 4,000 revolutions per minute, allowing you to stay informed about your engine’s performance. Its clear, white face with black numbers and an orange pointer ensures excellent readability, while the LED illumination offers enhanced visibility during nighttime driving. Designed for ease of installation and reliable operation, this tachometer is a valuable addition to any diesel-powered vehicle.

KEY FEATURES AND BENEFITS:

• Accurate RPM Monitoring: Provides precise readings of your diesel engine’s revolutions per minute up to 4,000 RPM.
• Versatile Signal Compatibility: Designed to work with various diesel signal types, including alternator with an ‘R’ or ‘W’ terminal, crank sensor signals, and magnetic pulse sensors.
• Optimal Size: The 4-1/2 inch (108mm) gauge face offers a clear and easily readable display without taking up excessive dashboard space.
• Easy Installation: Fits into a standard 4.23-inch (108mm) diameter hole and comes with a spin-lock ring for secure mounting.
• Enhanced Night Visibility: Features LED illumination, ensuring clear readings even in low-light conditions.
• Complete Wiring Included: Ships with an 8 ft Htz Tachometer Harness (for LED-lit gauges) and a 3 ft Power & Lighting Harness (for LED-lit gauges and clocks), simplifying the wiring process.
• Gauge Programming Button: Includes a programming button for LED-lit gauges, likely used for adjusting illumination settings or other gauge parameters.

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: 4K RPM
• Size: 4 1/2 inch
• Hole Size: 4.23 inches (108mm)
• Internal Shift Light: No
• Ships With:
  • Gauge Programming Button (For LED-Lit gauges)
  • 8 ft Htz Tachometer Harness (LED Lit)
  • 3 ft Power & Lighting Harness – for LED Lit Gauges and Clocks

HOW TO USE:

1. Preparation: Ensure your vehicle’s ignition is off and disconnect the negative battery terminal for safety.
2. Mounting the Gauge: Locate a suitable 4.23-inch (108mm) diameter opening on your dashboard. Insert the tachometer into the opening and secure it from the back using the provided spin-lock ring.
3. Wiring Connections:
   • Connect the power wire (typically red) from the 3 ft Power & Lighting Harness to a switched 12V power source in your vehicle.
   • Connect the ground wire (typically black) from the same harness to a reliable ground point on your vehicle’s chassis.
   • Connect the illumination wire (often orange or yellow) from the same harness to your vehicle’s headlight or parking light circuit if you desire the gauge to light up with your other lights.
   • Connect the signal wire from the 8 ft Htz Tachometer Harness to the appropriate signal source on your diesel engine (alternator ‘R’ or ‘W’ terminal, crank sensor, or magnetic pulse sensor). Consult your vehicle’s service manual or a wiring diagram for the correct connection point.
4. Programming (if necessary): If your gauge requires signal calibration (Pulses Per Revolution – PPR), you may need to use the included Gauge Programming Button. Refer to the specific instructions that come with your gauge for the exact programming procedure. This often involves pressing and holding the button during power-up and cycling through settings.
5. Final Steps: Once all wiring is securely connected, reconnect the negative battery terminal. Turn on your vehicle’s ignition to test the tachometer’s functionality and illumination.

BENEFITS OF USING THE SPEEDHUT 4-1/2″ 4K RPM DIESEL TACHOMETER (L45-TC7-LEG):

• Provides an immediate and clear indication of your engine’s operating speed, crucial for optimal performance and preventing over-revving.
• Offers compatibility with various diesel engine signal types, ensuring versatility across different vehicle makes and models.
• The illuminated display enhances safety and convenience by providing easy readability at night.
• The included wiring and programming button simplify the installation process.
• Its standard size ensures it can fit into common gauge mounting locations.

FEATURES:

• Analog display for classic and intuitive RPM monitoring.
• White gauge face with contrasting black numerals for excellent daytime visibility.
• Bright orange pointer for quick and easy reading of engine speed.
• LED backlighting ensures clear visibility during nighttime operation.
• Robust construction designed for automotive environments.
• Slim case design for easy integration into your dashboard.
• Utilizes a precise internal mechanism for accurate RPM readings.