How to replace lights of the speedometer behind the dash?

[sunny]

I have a Dodge Caravan 2002, and would like to replace
the bulbs that illuminate the speedometer.
I want to do that because, at night the needle and the surfaces
under 60km/ and 140 km/h are dark. (Just a part of the surface).

I called the dealer and it is no more under warranty, because I have
40 000km already, and the limit is 1 y / 20 000km.

Thanks for your help.

 

[mic canic]

the cluster is held in by 4 screws and is easy to get out to access the
bulbs in bac
the bulbs might have to be ordered depending on the dealer