Speedhut 4″ Antique Series 8K RPM Shift-light Tachometer (R4-TC3-ATQ)

The Speedhut 4″ Antique Series 8K RPM Shift-light Tachometer (R4-TC3-ATQ) offers precise engine speed monitoring with a classic aesthetic. Designed for vehicles utilizing standard spark plug ignition systems, this 4-inch gauge provides accurate RPM readings up to 8,000. Its integrated shift light enhances performance awareness, allowing drivers to optimize gear changes. Compatible with 1 to 12 cylinder gasoline engines, this tachometer is a valuable addition for anyone seeking reliable engine data in a timeless style.

KEY FEATURES AND BENEFITS:

• Provides real-time RPM readings: Up to 8,000, crucial for performance monitoring.
• Integrated shift light: Intensely bright internal LEDs improve awareness of optimal shift points.
• Calibratable pulse range: From 1/2 pulse to 6 pulses per revolution, ensuring wide compatibility with 1-12 cylinder gas engines.
• Accurate pointer movement: Reliable even under demanding engine conditions.
• Easy installation: Designed for a 4-inch (100mm) mounting hole.
• Includes wiring harnesses: Necessary tachometer signal and power/lighting connections provided.
• Classic Antique Series styling: Complements vintage and custom vehicle interiors.

SPECIFICATIONS:

• SKU: R4-TC3-ATQ
• Gauge Type: Tachometer
• Tachometer Signal Type: Standard spark plug ignition systems
• Compatibility: 1-12 cylinder gasoline engines
• Range: 0-8,000 RPM
• Size: 4 inches (100mm)
• Hole Size: 3.95 inches (100mm)
• Internal Shift Light: Yes
• Included:
  • 8 ft Tachometer Harness (1 Wire 2 Pin Connector)
  • 3 ft Power & Lighting Harness

HOW TO USE:

• Mount the Gauge: Locate a suitable flat surface on your vehicle’s dashboard and drill a 3.95-inch (100mm) diameter hole. Insert the tachometer and secure it using the included gauge mounting ring.
• Connect the Tachometer Harness: Attach the 8 ft Tachometer Harness (1 Wire 2 Pin Connector) to the appropriate tachometer signal output, usually the negative (-) side of the ignition coil or ECU tach output.
• Connect the Power and Lighting Harness: Connect the 3 ft harness: red wire to switched 12V ignition power, black wire to ground, and any additional wire to lighting circuit for illumination.
• Calibrate if Necessary: Adjust pulses per revolution via switch or setting to match your engine cylinders (consult manual for details).
• Test the Gauge: Start the engine and verify accurate RPM readings and that the shift light illuminates at the desired RPM.

BENEFITS OF USING THE SPEEDHUT 4″ ANTIQUE SERIES 8K RPM SHIFT-LIGHT TACHOMETER (R4-TC3-ATQ):

• Provides accurate, immediate engine speed feedback for optimal vehicle operation.
• The integrated shift light aids precise gear changes, enhancing acceleration and preventing engine over-revving.
• Classic “Antique Series” styling improves the interior look of vintage or custom vehicles.
• Compatible with a wide range of 1 to 12 cylinder gasoline engines using standard ignition systems.
• Relatively simple installation with included wiring harnesses.

FEATURES:

• Displays engine speed up to 8,000 RPM.
• Bright internal LEDs function as a visual shift indicator.
• Works with standard spark plug ignition signals.
• Supports engines with 1, 2, 3, 4, 5, 6, 8, 10, or 12 cylinders.
• Requires a 4-inch (100mm) mounting hole.
• Includes an 8-foot tachometer signal harness.
• Comes with a 3-foot power and illumination harness.