1. Product Overview
The ELING RPM Signal Adapter is designed to convert the ignition signal from gasoline engines into a standardized pulse output, making it compatible with various tachometers and RPM gauges. This device ensures accurate RPM readings for a wide range of vehicles and machinery.
Key Features:
- Universal Compatibility: Suitable for all types of gasoline engines.
- Easy Installation: Simple setup without damaging existing cables; no CANBUS/OBD required.
- Standardized Output: Converts coil current into a 9V pulse output, readable by most tachometers.
- Output TACH Ratio: Fixed at 4 pulses per round.
- Durable Design: IP67 waterproof rating for reliable performance in various conditions.
- Compact & Convenient: Mini size with a plug & play design.
- Power Supply: Operates on 12V DC.
2. Setup and Installation
Follow these steps for proper installation of your ELING RPM Signal Adapter.
Wiring Diagram:
The adapter features a clear labeling for easy connection. Refer to the image below for visual guidance.

- Red Wire: Connect to 12V DC power supply.
- Short Black Wire: Connect to Power Ground (GND).
- Long Black Wire: This is the input signal cable. Wrap it around the spark plug wire 5-8 turns to pick up the ignition signal.
- Blue Wire: This is the output signal cable, providing a fixed 4 pulses/round RPM ratio to your tachometer.
- Brown Wire: This is the switch control cable.
Ensure all connections are secure and insulated to prevent short circuits and ensure reliable operation. Cable ties are provided for neat and secure cable management.

3. Operation
The ELING RPM Signal Adapter operates automatically once correctly installed and powered. It continuously senses the ignition signal from your gasoline engine and converts it into a stable 9V pulse output for your connected tachometer or RPM gauge.
No user interaction is required for the adapter's core function after installation. The connected tachometer will display the RPM based on the signal provided by this adapter.
4. Maintenance
The ELING RPM Signal Adapter is designed for minimal maintenance. Due to its IP67 waterproof rating and robust construction, it is built to withstand harsh environments.
- Cleaning: Periodically clean the exterior of the adapter with a damp cloth to remove dirt and debris. Avoid using harsh chemicals.
- Connection Check: Occasionally inspect the wiring connections to ensure they remain secure and free from corrosion or damage.
- No User-Serviceable Parts: The internal components of the adapter are not user-serviceable. Do not attempt to open the casing, as this may void the warranty and damage the device.
5. Troubleshooting
If you experience issues with your RPM Signal Adapter, consider the following common troubleshooting steps:
- No RPM Reading:
- Verify that the Red wire is connected to a stable 12V DC power source.
- Ensure the Short Black wire is securely connected to a good ground point.
- Check that the Long Black input signal wire is correctly wrapped around the spark plug wire (5-8 turns).
- Confirm the Blue output signal wire is properly connected to the tachometer's signal input.
- Ensure the tachometer itself is functioning correctly and is configured for a 4-pulse input if adjustable.
- Inaccurate RPM Reading:
- Re-check the wrapping of the Long Black input signal wire around the spark plug wire. Ensure it is tight and has the recommended number of turns.
- Inspect the spark plug wire for any damage or interference that might affect the signal.
- Ensure the tachometer is correctly calibrated and set for the appropriate engine type (if applicable).
- No Power to Adapter:
- Check the fuse in the 12V DC power line, if one is installed.
- Test the 12V DC power source to ensure it is supplying power.
If these steps do not resolve the issue, please contact ELING customer support for further assistance.
6. Specifications
| Specification | Value |
|---|---|
| Manufacturer | ELING |
| Part Number | EL0692 |
| Item Weight | 100 g |
| Product Dimensions | 6 x 9 x 6.5 cm |
| Color | Type 1 |
| Material | Plastic |
| Measurement Accuracy | 97% |
| Included Components | Sensor (RPM Signal Adapter) |
| Batteries Required | No |
| Waterproof Rating | IP67 |
7. Warranty and Support
ELING Parts Ltd. is committed to providing high-quality marine and automotive components. All products are new and undergo strict quality management processes.
Warranty:
This product comes with an after-sales guarantee. For specific warranty terms and conditions, please refer to the documentation included with your purchase or contact ELING customer support.
Customer Support:
For technical support, product inquiries, or assistance with installation and troubleshooting, please contact ELING customer service. Our team is dedicated to providing prompt and helpful support.
Each product package includes an installation manual. If you require further assistance, please reach out to us through the retailer or our official website.





