New owner of a 1983 380 SL with a few questions

- Do all 380’s have a trunk light ? I cant seem to find mine !

- the buzzer for the lights doesnt work when i turn off the car with the lights on , any idea what would be the problem ? A fuse ?

- did anybody tried ceramic coating ? Im the process the clear coat of the lain is polished i was told that old cars have very poor/thin clear cost and excessive polishing could be an issue… any thaughts?