W124 interior light/courtesy light

[j-galap]

Hi folks,

I'm trying to figure out how to get my door operated interior light (map/dome light?) working on my 1995 W124 wagon.

The light works fine by the switch on the sunroof panel and all the door pin switches are in good order but doesn't operate when you open the doors.

The other thing I noticed is that when you open the door, the courtesy lights on the underside of the door panels come on, but the main light doesn't (fronts work, rears don't - not too bothered about the rears honestly).

Any thoughts on what it would likely be? I'd like to have a working interior light when getting in and out of the car if I can

Thanks!