Dodge 2016 Challenger Owner's Manual page 146

144 UNDERSTANDING THE FEATURES OF YOUR VEHICLE
open. This includes the glove box light and the trunk
light. To restore interior light operation, either place the
ignition in the ON/RUN position or cycle the light
switch.
Dimmer Controls
The dimmer control is part of the headlight switch and is
located on the left side of the instrument panel.
Dimmer Controls
With the parking lights or headlights on, rotating the left
dimmer control upward will increase the brightness of
the instrument panel lights and lighted cupholders (if
equipped).