Description
Experience enhanced driving with the Speedhut 4″ 8K Tachometer/120mph GPS Speedometer Gauge (R4-DS14-LEG). This innovative dual gauge integrates a precise tachometer capable of reading up to 8,000 RPM with an accurate GPS speedometer that measures speeds up to 120 MPH. Utilizing advanced GPS technology, the speedometer delivers real-time speed readings without the complexities of traditional speed sensors or the need for calibration based on tire size or gear ratios. Installation is straightforward, requiring only a 12V power connection and the included waterproof GPS antenna. The tachometer is engineered for broad compatibility, working seamlessly with any engine and tach signal exceeding one volt, supporting signal ranges from 1/2 pulse to 6 pulses per revolution. This dual functionality provides a comprehensive solution for monitoring your vehicle’s performance with confidence.
KEY FEATURES AND BENEFITS:
- Dual Functionality: Combines an 8,000 RPM tachometer and a 120 MPH GPS speedometer in a single 4-inch gauge.
- GPS Speedometer: Provides accurate, real-time speed readings using GPS technology, eliminating the need for speed sensors and calibration. Operates globally without any subscription fees.
- Wide Tachometer Compatibility: Works with any engine and tach signal over one volt, supporting 1/2 to 6 pulses per revolution. Ensures accurate RPM readings even in demanding conditions.
- Simple Installation: Requires only a 12V power connection and the included GPS antenna. No complex wiring or calibration needed for the speedometer.
- Accurate Readings: Features an internal microprocessor for precise data processing and a high-torque stepper motor for accurate pointer movement.
- Robust Design: Includes a slim case, a secure spin-lock ring for easy mounting, and a solid billet aluminum bezel for added strength and a refined look. The gauge is also weather-resistant.
- Reliable Support: Backed by a lifetime warranty on the electronic circuit board and proudly made in America, ensuring quality and dependability.
SPECIFICATIONS:
- Gauge Type: Dual GPS Speedometer and Tachometer
- Tachometer Range: 0 – 8,000 RPM
- Speedometer Range: 0 – 120 MPH
- Gauge Size: 4 inches
- Mounting Hole Size: 3.93 inches (100mm)
- Measurement Standard: Standard (MPH)
- Included with Purchase:
- 3 ft Power & Lighting Harness (for LED Lit Gauges and Clocks)
- GPS Antenna with 9.8 ft long cable and male SMA connector
- 8 ft Tachometer Harness (for LED Lit Gauges – 1 Wire 2 Pin Connector)
HOW TO USE:
- Mount the Gauge: Locate a suitable 4-inch diameter hole (3.93 inches) in your vehicle’s dashboard or mounting panel. Insert the gauge and secure it using the spin-lock ring from the back.
- Connect Power and Lighting: Connect the 3 ft Power & Lighting Harness to the gauge. Connect the red wire to a 12V positive power source and the black wire to ground. The other wires in this harness are for optional LED lighting.
- Install the GPS Antenna: Mount the included waterproof GPS antenna in a location with a clear view of the sky. Route the 9.8 ft cable to the back of the gauge and connect the male SMA connector to the corresponding port on the gauge.
- Connect the Tachometer: Connect the 8 ft Tachometer Harness to the designated port on the gauge. Connect the single wire from this harness to your engine’s tachometer signal output (refer to your engine’s service manual for the correct wire).
- Start Your Vehicle: Once all connections are secure, start your vehicle. The speedometer should begin displaying your speed based on the GPS signal, and the tachometer should indicate the engine’s RPM.
BENEFITS OF USING THE SPEEDHUT 4″ 8K TACHOMETER/120MPH GPS SPEEDOMETER GAUGE (R4-DS14-LEG):
- Accurate Speed Measurement: Enjoy precise speed readings without the need for calibration, thanks to advanced GPS technology. This eliminates inaccuracies caused by tire size changes or gear ratio modifications.
- Simplified Installation: The GPS speedometer’s straightforward installation, requiring only power and antenna connection, saves time and effort compared to traditional speed sensor setups.
- Universal Tachometer Compatibility: The tachometer’s broad compatibility ensures it can be used with a wide range of engines and ignition systems.
- Clear and Comprehensive Data: Having both speed and RPM displayed in a single, easy-to-read gauge provides essential information for monitoring your vehicle’s performance.
- Reliable Performance: The internal microprocessor and high-torque stepper motor ensure accurate and stable readings, even under demanding driving conditions.
- Long-Lasting Quality: The robust construction, weather-resistant design, and lifetime warranty on the electronic circuit board offer peace of mind and long-term reliability.
FEATURES:
- Integrated GPS receiver for precise speed tracking.
- Tachometer supports a wide range of engine pulse signals (1/2 to 6 per revolution).
- Real-time speed and RPM display.
- Spin-lock mounting system for easy and secure installation.
- Durable billet aluminum bezel.
- Weather-resistant construction.
- Internal microprocessor for accurate data processing.
- High-torque stepper motor for precise pointer movement.
- Worldwide GPS operation without subscriptions.
- Receive-only GPS data for enhanced privacy.
- Made in America.
- Lifetime warranty on the electronic circuit board.






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