2001 Chrysler 300 Flickering Lights

Interior problem
2001 Chrysler 300 6 cyl Automatic 100000 miles

Hello!

My map lights flicker on and off very irregularly while driving. This really only happens at night, when I have the headlights turned on. It's very unnerving. What should I do to have this fixed, and what's the cause of the problem?

Thanks!

~ Dave