no info on the information display

I have just purchased a 1999 Freightliner Century,I get it home and start going through it and I can't get the information display to work,like the odometer or scan readings,the system is working because the indicators light up,like turn signals and engine and low air lights when you turn the key on.I know the previous owner read the milage off of it when I test drove it.I cant find any info on it on web sites as far as having to turn it on ,it seems it should be always on,am I missing somthing?

 

Ok thanks,I called the previous owner and he said he thought his son had turned it off,or for me to check the fuses,he's not very tech savoy.I really need to have the odometer working.

 

ok here is the vin #1FUYSSEB7XL9&&043

 

Opps ! can't believe I did that, yes 977043.