turn the dimmer up.
the dash and radio lights are supposed to dim when the headlights come on. Make sure you have the brightness of the dash lights turned up as much as possible.
generally at night.
my headlights and dash lights stopped working on my 2007 yamati strada RX150
WIRINGS!!
It may be wired wrong.
A weak alternator and/or battery.
headlights and dash lights in 2001 sunfire wont turn on.
What year is the vehicle? Did you check the fuse?
in dash lights
Most likely a fuse.
They should just dim. By turning the headlights on, the engineers assumed it would be dark. Often there's a knob or wheel on the dash where you can adjust the brightness of your gauge lights.