Hi Adam,
Try the following:
Get a torch and shine it at the odometer display to see if you can read the mileage. If you can, then it is likely that the bulb in the instrument cluster behind the odometer/trip display has blown.
Unfortunately it will require removal of the instrument panel as below:
https://i50.photobucket.com/albums/f3...entpanel01.jpg
https://i50.photobucket.com/albums/f3...entpanel02.jpg
See Section 9. but ignore the first part about removing the steering wheel - just turn the wheel so u can remove the screw covers and screws located at 3 & 9 o'clock positions on the shroud behind the steering wheel.
The replacement bulb is a 1.2W which sits in a plastic holder with a bayonet fitting.
Hope this may help.