I don't speak much electric, so I could use your guys's help on this issue. This is on a convertible, so no dome light, just driver's and passenger's floor 'courtesy lights.

The issue is both lights work, but only independently. Meaning, when I open the driver door, only the driver courtesy light comes on, -passenger side, only passenger side light comes on. When operating the light switch, only the drivers side light comes on. Any ideas what to look for?