replacement of bulb in dash of 300e temp wheel and directional flow section.

[geeceed]

could some sombody please advise how to reach the bulb that illuminates the temperture wheel and air direction indicator in the dash of 1988 300e. the right hand side section is inoperative.:

thanks in advance for assistance. this forum is a very informative and interesting and eagerly read everyday. I reside in Shepparton, Australia and it is interesting that the same problems confront everybody world wide. keep up the good work.