RAM Dodge 2009 Owner's Manual page 207

UNDERSTANDING THE FEATURES OF YOUR VEHICLE 205
3
Rambox Pushbutton and Lock Rambox Light Switch
The interior of the Rambox will automatically illuminate
when the lid is opened. In addition to the automatic
illumination switch, there is a manual on/off switch
located at the rear of each storage bin. Pushing the switch
once will turn off the bin lights, pushing the switch again
will turn the lights back on.