Occasionally my 200 Malibu does something similar...engine turns off, but radio stays on, etc. Make sure you a really in PARK to get the accessories to turn off.
It sends a power to the starter relay/solenoid to engauge the starter. Know that the ignition switch is not what you put the key in and turn. That is the lock assembly. The ignition switch is located lower down on the steering column.
What year and model? Under what conditions? The dash lights are designed to stay on in certain models. Saab 900s from about 1987 on will have dash lights come on any time the ignition switch is in the ON position, whether or not the headlight switch is turned to ON.
Set your light switch to "auto" on the dash and your lights will come on automatically with the ignition. Turn your light switch on your dashboard to "auto" or "automatic" and the lights will come on and off with your ignition switch.
Have you checked the dimmer? I have a 2000 and there is a wheel to dim the dash lights to the left of the steering wheel, just above the cup holder.
There is a switch for that. It is in the dash illumination brightness control switch.
Bad brake light switch, it's on top of the brake pedal under the dash.
To turn on the dash lights in a 1992 Mercedes 190E, locate the headlight switch on the left side of the dashboard. Rotate the switch to the right until you hear a click, which activates the parking lights and dashboard illumination. If the lights still do not turn on, check the dimmer switch (often integrated with the headlight switch) to adjust the brightness of the dash lights. Ensure that the vehicle's ignition is in the "on" position for the lights to function.
the ignition switch is the key and its on the stering collem or on the dash
I have been researching for a fix to get my dash lights working again and have come across your problem and the fix seems to be that you have to change the ignition switch which is a wire harness under the steering colum attached bellow the key cylinder. If you look up jimmy ignition switch you will find the info you need.
Check your headlight switch. Sometimes the switch goes bad and the dash lights won't light. Replace the switch for the fix.
check the fuse for dash lights
There should be a roll switch right next to your light switch on your dash to dim the lights with.