General Information

Lighting controls discussed in this section include dash-mounted and other switches as well as "automatic" lights that turn on and off based on different vehicle inputs.

Lighting controls included in the vehicle ICU are discussed in Instrumentation Control Unit.

Unless otherwise noted, light switches on a Western Star vehicle work by toggling the switch up to turn lights ON and down to turn lights OFF.

Dash-mounted switches are backlit to illuminate both the text and icon on the switch. When ON, the icon at the top of dash-mounted switch will illuminate green.