Instrument-Cluster Lighting

Instrument-cluster lighting
The speedometer and the tachometer are illuminated by slit light between the dial face and the graduated dial. The brightness of the dial face, needle and display illumination (dimming) is determined by the LSZ light switch center. The lights ON signal is transmitted from the LSZ light switch center to the instrument cluster (via the K bus). The dimming signal is also transmitted via the K bus. The LSZ evaluates the following input signals to control dimming:
^ Dimmer (knurl in light switch center)
^ Photoelectric cell for ambient brightness (in light switch center)
Because the dimming signal is sent via the K bus, there is no need for terminal 58g.