Why would a 2001 Dodge Stratus displays turn off when you turn on the headlights?
most likely a relay under the hood is bad. Dodge vehicles are
notorious for that problem
ALSO (OR) ...
Check the instrument panel dimmer control on the left control
arm (turn signal lever) of the steering wheel. If this is "dimmed"
(turned clockwise) to a lower setting, you won't notice it until
you turn on the lights and they will be very dim.
SOLUTION: While the lights are "on", turn the control away from
you (counter-clockwise) and the display illumination should