1998 Oldsmobile Achieva Owner's Manual - Page 103

Automatic Light Control (ALC) Your vehicle is equipped with an automatic lightsensor on topof the instrumentpanel under the defrostergrill, so be sure it is covered which will cause the not nighttime lights to be continuously. on When it is dark enough outside, your ALC will turn on your headlamps that you were last using at the normal brightness alongwith other lamps such as the taillamps, sidemarker, park lamps and instrument panel lights. There is a20-second delay in the transition between daytime and nighttime operationof the DRL and the a ALC systems. If the light sensor senses reduction in lighting that lasts longerthan 20 seconds, itwill activate the nighttime lamps.If you are drivingthrough a parking garage,heavy overcast weather, a tunnel or fueling your vehicle in a low light area, the ALC will turn on your low-beam headlamps at a normal brightness alongwith the taillamps, sidemarker, park lamps and the instrument panel lights. The radio lights will be dimmer. As with any vehicle, you should turn on the regular headlamp system when you need it. Interior Lamps Instrument Panel Intensity Control You can brighten or dim the instrument panel cluster lights by rotating the INT LIGHTS switch. Rotating the wheel to MAX will turn on the courtesy lamps. 2-39