work on the overhead gauge/light/computer for mpg etc. How do the 2 clips come off or work I need a diagram please

What is your question?

the light or illumination doesn't work. I see the keepers inside the overhead trough to remove, but cannot extract the cover easliy how do I get access.

What makes this problem better or worse?

nothing

How long has your 2000 Ford F-350 Super Duty had this problem?

6 months