Forester S F4-2.5L DOHC (1998)
Tachometer: Description and Operation
TACHOMETER
The tachometer drive circuit connects to engine revolution detecting circuit in engine control module.
When the engine revolution increases/decreases, the voltage of this circuit also increases/decreases, changing the magnetic force of tachometer drive
coil.
Thus, the tachometer hand moves together with engine revolution change.