Charge Lamp/Indicator: Description and Operation

The alternator charge warning lamp within the instrument pack utilizes a red LED and a clear legend. The LED illuminates when the alternator output voltage is less than 2 volts. When the alternator output is greater than 7.6 volts the LED is extinguished, providing the driver with a visible warning that the alternator is charging.

When the ignition is switched on, and the LED illuminates, it will remain illuminated until the engine is started and voltage is above the predetermined parameter, or the ignition is switched off providing there is no fault.

The power input for the LED is supplied by the instrument pack via fuse 27. The alternator provides a signal to illuminate the warning lamp by means of a hard wired connection to the instrument pack.

The response to the voltage signal at the instrument pack is as follows:
- < 2.0 volts = warning lamp on.
- > 7.6 volts = warning lamp off.