Description
The Speedhut 4-1/2″ EV AEM 120mph Speedometer Gauge (FAE45-S1-EV) is a specialized instrument designed to provide accurate speed readings for electric vehicles. By directly interfacing with the EV’s Controller Area Network (CAN-bus) at a 500K baud rate, this gauge eliminates the need for traditional speed sensors, ensuring precise and reliable speed monitoring. Its 4 1/2 inch size and straightforward installation make it a valuable addition to any electric vehicle build or upgrade.
KEY FEATURES AND BENEFITS:
- Precise Speed Monitoring: Directly reads speed data from the EV’s CAN-bus system, ensuring accurate and real-time speed information displayed within a 0-120 MPH range.
- Seamless CAN-bus Integration: Designed to communicate directly with the EV’s electronic control unit (ECU) via the CAN-bus network (500K baud rate), simplifying installation and eliminating compatibility issues with traditional sensors.
- Easy Installation: The gauge’s 4.230″ (108mm) hole size and included mounting hardware facilitate a straightforward installation process. The provided wiring harnesses further streamline the setup.
- Durable Construction: Built to withstand various operating conditions, ensuring long-lasting performance and reliability in your electric vehicle.
- Optional Indicators: Offers the flexibility to integrate optional 12 Volt activated turn signal and high beam indicators for enhanced vehicle awareness.
- Complete Wiring Included: Ships with essential wiring harnesses, including an EV CAN Jumper Harness, an EV CAN Harness, and a 3 ft Power & Lighting Harness for LED-lit gauges and clocks.
SPECIFICATIONS:
- Gauge Type: Speedometer
- Signal Type: CAN-Bus (500K baud rate)
- Range: 0 – 120 MPH
- Size: 4 1/2 inch
- Hole Size: 4.230 inches (108mm)
- Included: EV CAN Jumper Harness, EV CAN Harness, 3 ft Power & Lighting Harness
HOW TO USE:
- Connect the CAN Harness: Plug the provided EV CAN Harness into the designated CAN-bus port of your electric vehicle’s control unit.
- Connect the Jumper Harness (if needed): If required by your specific EV setup, use the EV CAN Jumper Harness to facilitate the connection to other CAN-bus devices.
- Connect the Power and Lighting Harness: Attach the 3 ft Power & Lighting Harness to a 12V power source in your vehicle and connect it to the gauge to provide power and illumination for the LED lighting.
- Mount the Gauge: Insert the 4 1/2 inch gauge into a 4.230 inch (108mm) diameter hole in your dashboard or instrument panel and secure it using the provided mounting hardware.
- Verify Functionality: Once all connections are made, power on your electric vehicle and ensure the speedometer is receiving and displaying accurate speed readings.
BENEFITS OF USING THE SPEEDHUT 4-1/2″ EV AEM 120MPH SPEEDOMETER GAUGE (FAE45-S1-EV):
- Provides highly accurate and real-time speed information directly from your EV’s CAN-bus system, eliminating potential inaccuracies from traditional speed sensors.
- Simplifies the instrumentation process for electric vehicle builds and upgrades with its direct CAN-bus connectivity and included wiring harnesses.
- Offers a clean and modern aesthetic to your EV’s dashboard with its 4 1/2 inch gauge size.
- Ensures reliable performance and longevity due to its robust construction designed for automotive environments.
- Offers the option to integrate essential indicator lights for turn signals and high beams, enhancing safety and functionality.
FEATURES:
- Direct digital speed signal acquisition via CAN-bus (500K baud rate).
- Clear and easy-to-read 0-120 MPH scale.
- Standard unit of measurement (MPH).
- Slim case design for versatile mounting options.
- LED backlighting for excellent visibility in all lighting conditions.
- Designed specifically for electric vehicle applications.
- Included EV CAN Jumper Harness for flexible connectivity.
- Comes with a dedicated EV CAN Harness for direct ECU interface.
- Power and lighting are managed by the included 3 ft harness.






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