Lights-on indicator lamp: Notes

Fig 1: Identifying Lights-On Indicator Lamp Communication Diagram

Courtesy of SAAB-SCANIA OF AMERICA, INC.

Fig 2: Identifying Lights-On Indicator Lamp Communication - Circuit Diagram

Courtesy of SAAB-SCANIA OF AMERICA, INC.

An indicator lamp shows when the headlamps are switched on. The lamp is situated below the speedometer.

The lamp is powered from the main instrument unit and grounded internally by the main instrument unit. The indicator lamp is turned on by the control module when the main instrument unit input (pin 12) is powered with B+ from the light switch.