Instrument cluster lights

[tabasco85331]

Hi everybody ! I own two MB s . A 1989 420 SEL and a 1979 450 SLC . My 420 has a instrument cluster light problem . The brightness adjuster works fine and all other lights on the dash work fine . All fuses are good . Im thinking its the bulb but how do you pull the instrument cluster out to replace the bulbs ? I have a tech diagram but it doesn t show any clips that hold it in or explain where or how to acess them from the outside of the dash . Help ...