The body computer is in control of the interior lighting.
Possible headlight switch. Try wiggling the controls to see if it stop or gets worse.
not to sure but on my vectra it normally controls the interior lights, but you have to pull the switch out to put the interior lights on
check the battery and or alternator
It controlls the theft alarm, interior lights, wipers, part of the hvac system, cluster, etc.
The interior lights are controlled by the headlight switch and are protected by a fuse.
which fuse controls the lift gate or interior lights on a 2003 ford expedition
Distance indicators for the backup sensor system.
The body computer controls the lights, door locks, wipers, part of the theft alarm, keyless entry,
Radio memory, interior lights, memory seat functions,Radio memory, interior lights, memory seat functions,
in the fuse box
Should be parking/tail/dash lights on a common circuit