How to fix 99 civic hatch tach not working?

To fix a non-working tachometer in a 1999 Honda Civic hatchback, first check the wiring and connections to the tachometer, ensuring there are no loose or damaged wires. Next, inspect the ignition system, as a faulty ignition coil or distributor can affect the tach signal. If these components are functioning properly, consider replacing the tachometer itself or the vehicle's ECU, as these could also be the source of the issue. Finally, consult a repair manual for specific troubleshooting steps or seek professional assistance if needed.