Charge warning lamp: Notes
The charge warning lamp is situated in the top RH corner and informs the driver whether or not the generator is charging.
The lamp is supplied from the main instrument unit and grounded internally in the main instrument unit.
If the generator is not turning or not charging for any reason, pin 6 on the main instrument unit is grounded via the regulator from the generator field winding, whereupon the control module lights the lamp. At the same time the central warning lamp is lit and at engine speeds above 300 RPM, the MIU sends a request to SID to activate the acoustic signal.
When the generator is charging, D+ on the generator has the same voltage as B+ on the generator, which means that the input on the MIU is supplied with power B+ whereupon the control unit turns off the lamp.