Usually lights not working are a sign of a bad ground wire in your car if the fuses are ok. Check the ground from the battery to the block. Some people add an extra ground from the trans to the frame to help solve intermittent electrical problems.
Console lights and brake lighting are on different circuits (Fused seperately). Check the following: bulbs, bases, corroded connections, poor ground, blown fuses, faulty light switch.
check the fuses - there is no fuse for the headlights.
check the fuses
If the headlights are not working correctly on a 1990 Corvette, the fuses or lights could be going out. Replace the old fuses and check that all wires connected to the lights are functioning correctly.
Have you checked the fuses?
check your bulbs and fuses check your bulbs and fuses
check your fuses
Check your fuses
Check the fuses and the bulbs.
Check the fuses. If they are good then you will have to replace the headlight switch.
could be bad wiring
Check the bulbs and check the fuses.