Speedhut 4″ Pontiac Design 8K RPM Shift-light Tachometer (R4-TC3-PTC)

The Speedhut 4″ Pontiac Design 8K RPM Shift-light Tachometer (R4-TC3-PTC) is an essential instrument for drivers looking to accurately monitor their engine’s revolutions per minute (RPM) and optimize their vehicle’s performance. Featuring a distinct Pontiac-inspired design, this 4-inch gauge seamlessly integrates into your instrument panel, providing clear and precise RPM readings up to 8,000. The integrated, intensely bright shift light can be calibrated to your desired RPM point, offering a visual cue for optimal gear changes, ultimately helping you maximize your engine’s power and prevent over-revving. Designed for ease of use and broad compatibility, this tachometer works with most gasoline engines utilizing standard spark plug ignition systems, ranging from 1 to 12 cylinders. Its robust construction ensures reliable performance, even in demanding driving conditions.

KEY FEATURES AND BENEFITS:

• Accurate RPM Monitoring: Provides precise real-time readings of your engine’s revolutions per minute up to 8,000 RPM.
• Programmable Shift Light: Features an intensely bright internal shift light that can be calibrated from 1/2 pulse to 6 pulses per revolution, allowing for customized performance monitoring and optimal gear changes.
• Broad Engine Compatibility: Designed to work seamlessly with any gasoline engine that uses a standard spark plug ignition system and produces a tach signal over one volt, supporting configurations from 1 to 12 cylinders.
• Enhanced Performance: Helps drivers achieve peak engine efficiency and responsiveness by providing timely shift prompts.
• Easy Installation: Comes with a gauge mounting ring and clearly labeled wiring harnesses for a straightforward installation process.
• Rugged Build: Constructed to withstand the rigors of daily driving and performance applications, ensuring long-lasting reliability.

SPECIFICATIONS:

• Gauge Type: Tachometer
• RPM Range: 0 – 8,000 RPM
• Size: 4 inches (diameter)
• Hole Size Required: 3.95 inches (100mm)
• Tachometer Signal Type: Standard spark plug ignition systems
• Cylinder Compatibility: 1-12 cylinders
• Internal Shift Light: Yes, programmable (1/2 to 6 pulses per rev)
• Included:
  • 3 ft Power & Lighting Harness (for LED Lit Gauges and Clocks)
  • 8 ft Tachometer Harness (1 Wire 2 Pin Connector)
  • Gauge Mounting Ring

HOW TO USE:

1. Mount the Gauge: Locate a suitable 3.95″ (100mm) diameter opening in your vehicle’s instrument panel. Secure the tachometer in place using the included mounting ring.
2. Connect the Power and Lighting Harness: Connect the 3 ft power and lighting harness to a 12V power source in your vehicle, ensuring proper polarity (positive and negative). This harness will also power the LED backlighting of the gauge.
3. Connect the Tachometer Signal Harness: Locate the tachometer signal wire from your engine’s ignition system (typically connected to the negative side of the ignition coil or the ECU, depending on your vehicle). Connect the 8 ft tachometer harness to this signal wire using the provided 1-wire, 2-pin connector.
4. Ground the Gauge: Ensure the gauge has a proper ground connection, usually through the power harness.
5. Calibrate the Shift Light (Optional): Once the gauge is powered on, you can calibrate the internal shift light to your desired RPM. Refer to the Speedhut instructions for the specific calibration procedure for this model, which typically involves setting the number of pulses per revolution and the RPM trigger point.
6. Verify Operation: Start your engine and observe the tachometer reading to ensure it is accurately displaying the engine RPM. Check that the shift light illuminates at the set RPM during engine operation.

BENEFITS OF USING THE SPEEDHUT 4″ PONTIAC DESIGN 8K RPM SHIFT-LIGHT TACHOMETER (R4-TC3-PTC):

• Improved driving performance through precisely timed gear shifts prompted by the shift light.
• Helps prevent engine over-revving with a clear visual warning at pre-set RPM levels.
• Provides real-time, accurate monitoring of engine RPM for performance tuning and diagnostics.
• Adds aesthetic appeal with a distinct Pontiac-themed design.
• Simple to install with all necessary hardware and wiring included.

FEATURES:

• Unique Pontiac styling complements the interior of compatible vehicles.
• Bright LED backlighting ensures visibility under all lighting conditions.
• High precision needle movement offers accurate and responsive RPM readings.
• Programmable shift light supports multiple calibration options for various engine setups.
• Compatible with direct spark plug ignition signals for simplified installation.
• Includes mounting ring for a secure and professional-looking setup.