Interior light issue

[magic]

I have some lights on my 2003 Turbo S that do not work. They are the glove box light, the courtesy light on the passenger door (the courtesy light on the driver's side door works fine) and the trunk light do not come on. I replaces all three bulbs, still they do not come on. I checked the fuses and they all seem to be fine.
Anyone else had this problem and did they solve it? Could it possibly be a ground issue? If so, where would I access the grounding location of this circuit? I am assuming that these three lights are on the same circuit.

[Basher]

I don't think there is a common connection between these lamps.

The door light could be due to a broken doow switch. A problem that occurs on a lot of NBs, search for door microswitch.

I'm not great at reading the electrical schematics in my Bentley manual, but it appears to me that the trunk light is both used for the light (as an on/off switch) as well as for the indicator lamp on the instrument cluster. Does that indicator light up when the hatch is not closed? If it doesn't then check the switch.

Finally, as far as I can see in the repair manual, the glove compartment light is a combined switch/lamp unit. Perhaps the switch is stuck?

[magic]

Thanks Basher

On the passenger door, I thought that it maybe the door switch but the light under the mirror comes on when the door is opened only the courtesy light on the door does not come on. That is why I am thinking that it is not the switch.

On the glove box it is not a combo switch/light. There are two rubber bumpers at the front of the glove box that I think are the switch for the light in the glove box. I thought it may possibly be the switch (on/off with glove box door close/open). I don't know?

On the hatch light well, the hatch idiot light does not even come on when turning the ignition key on and shows all of the idiot lights on the speedo!!! Where is the hatch/trunk switch located?