Dodge 2012 Charger - Owner Manual - Manual (Page 210)

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). Ambient Light Control
Rotate the right dimmer control upward or downward to
increase or decrease the brightness of the door handle
lights and ambient light located in the overhead console.
Instrument Panel Dimmer Door Handle/Ambient Light Dimmer
208 UNDERSTANDING THE FEATURES OF YOUR VEHICLE