Introduction
Thank you for choosing the AUTO METER Autogage 2301 3.75-inch Tachometer. This manual provides essential information for the correct installation, operation, and maintenance of your new tachometer. Please read these instructions thoroughly before beginning installation to ensure proper function and to avoid potential damage to the unit or your vehicle's electrical system. Retain this manual for future reference.
Important Safety Information
WARNING: Always disconnect the vehicle's battery before performing any electrical work to prevent electrical shock or damage to the vehicle's electrical system. Ensure all wiring connections are secure and properly insulated.
CALIFORNIA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Product Features
- Traditional incandescent lighting illuminates around the perimeter of the dial for clear visibility.
- Compatible with 2-pulse or 4-pulse ignition signals, suitable for 4-cylinder or 8-cylinder engines.
- Supports points, electronic, and most 12V high-performance racing ignitions.
- Operates with 12-volt and 16-volt electrical systems, making it compatible with a wide range of street and race vehicles.
Product Overview
Figure 1: AUTO METER Autogage 2301 Tachometer. This image displays the AUTO METER Autogage 2301 Tachometer. It features a black dial with white numbers (0-8, representing RPM x1000) and yellow tick marks. The white needle points to '2' in this view. The 'Auto gage' logo is visible on the dial, with 'by Auto Meter' below it. The tachometer has a chrome bezel and a black mounting bracket.
Installation Instructions
Proper installation is crucial for the accurate operation and longevity of your tachometer. If you are unsure about any step, consult a qualified automotive technician.
Tools and Materials Required
- Basic hand tools (screwdrivers, wrenches, wire strippers/crimpers)
- Electrical tape or heat shrink tubing
- Multimeter (for verifying power and ground)
- Drill and appropriate drill bits (for mounting)
- Wire connectors (crimp-on or solder)
Wiring Overview
The tachometer typically requires four main connections:
- Red Wire (+12V Switched Power): Connect to a switched 12-volt power source that is active when the ignition is on. This can often be found at the fuse box or an accessory circuit.
- Black Wire (Ground): Connect to a clean, reliable chassis ground point. Ensure the connection is free of paint or rust.
- Green Wire (Ignition Signal): Connect to the negative side of the ignition coil (for points or electronic ignitions) or the tachometer output terminal on an aftermarket ignition box. Consult your vehicle's service manual or ignition system instructions for the correct signal wire location.
- White Wire (Illumination): Connect to the vehicle's dash lighting circuit. This wire provides power to the internal incandescent bulb, illuminating the gauge when headlights are on.
Note: Specific wire colors may vary by manufacturer. Always refer to the wiring diagram provided with your specific tachometer model if available, or consult a professional.
Mounting the Tachometer
- Choose a suitable mounting location that provides clear visibility to the driver without obstructing the view of the road or other critical instruments.
- Use the provided mounting bracket and hardware. Secure the bracket firmly to a stable surface.
- Insert the tachometer into the bracket and tighten any retaining screws or nuts to hold it securely in place.
- Route all wiring away from hot engine components, sharp edges, and moving parts to prevent damage.
Operating Instructions
Once properly installed, the AUTO METER Autogage 2301 Tachometer will display engine revolutions per minute (RPM). The dial is marked from 0 to 8, representing 0 to 8000 RPM (x1000).
- Turn the vehicle's ignition to the "ON" position. The tachometer needle should move slightly or settle at zero.
- Start the engine. The needle will rise to indicate the current engine RPM.
- When the vehicle's headlights or dash lights are activated, the tachometer's internal incandescent bulb will illuminate the dial.
Monitor your engine's RPM to ensure it operates within safe and efficient ranges, especially during spirited driving or when shifting gears.
Maintenance
The AUTO METER Autogage 2301 Tachometer is designed for durability and requires minimal maintenance.
- Cleaning: Use a soft, damp cloth to clean the face and bezel of the tachometer. Avoid abrasive cleaners or solvents that could damage the finish or clear lens.
- Wiring Inspection: Periodically check all wiring connections for tightness and signs of wear or corrosion. Ensure insulation remains intact.
- Bulb Replacement: If the illumination bulb burns out, it can typically be replaced by accessing the rear of the tachometer. Use a compatible incandescent bulb.
Troubleshooting
If your tachometer is not functioning correctly, refer to the following common issues and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Tachometer does not light up. | No power to illumination wire; faulty bulb; poor ground connection. | Check white wire connection to dash lights. Verify bulb functionality and replace if necessary. Ensure black ground wire is secure. |
| Tachometer reads zero or is erratic. | No ignition signal; poor power or ground connection; incorrect engine cylinder setting (if applicable); faulty unit. | Verify green wire connection to ignition signal. Check red and black wire connections. Ensure compatibility with engine type. Contact manufacturer if issues persist. |
| Tachometer reads incorrectly (too high/low). | Incorrect ignition signal type; interference; faulty unit. | Confirm green wire is connected to the correct ignition signal source. Check for strong electromagnetic interference near wiring. |
If troubleshooting steps do not resolve the issue, it is recommended to consult a professional automotive technician or contact AUTO METER customer support.
Specifications
| Feature | Detail |
|---|---|
| Brand | AUTO METER |
| Model Number | 2301 |
| Material | Plastic |
| Item Weight | 0.1 Pounds (approx. 1.6 ounces) |
| UPC | 046074023019 |
| Bulb Type | Incandescent |
| Compatibility | 2-4 pulse ignition signals (4-8 cylinder engines), 12V/16V systems |
| Exterior Finish | Painted |
Warranty and Support
For detailed warranty information, including terms, conditions, and duration, please refer to the documentation included with your purchase or visit the official AUTO METER website. In case of technical issues or questions not covered in this manual, please contact AUTO METER customer support directly.
Manufacturer: Auto Meter
Website: www.autometer.com (Note: This is a general link, please verify the official support page for your region.)
