What size bulb fitting for interior front dome light??

[noogieman]

Need to know what size bulb fits the highlighted area on front dome light for W202?
Can you show me a photo of this bulb?

Thanks

 

[OneForTheRoad]

Can't you just pop off the cover and remove the duff bulb.

 

[noogieman]

Many years ago I fitted LED's into my dome lights.
For the squared part highlighted in the photo only half of the plastic cover illuminates and the rest is duff.
I forgot what the original bulb looks like, and the socket size it has?
Stock bulb illuminates stronger than the current LED fitted now