On a convertable, Courtesy lights are basically the sameas the dome light. Yes?
And the courtesy lights work when a door is open?
The brake lights don't seem to light up, but draw power when the brake is applied.
Tail lights and parking lights work when their feed wires are directly connected to to power.
How is the headlight connector condition?
Dana and I (and others) have both had to deal with damage there.
If the terminal backs out of the plastic connector there will be poor or no connection.