Even though my dashboard is lit up, the gauge needles including speedometer are not. You can't see how fast you are going or even the gas tank level. What causes this?

Unfortunately the dash lights on an accord only light the numbers however there are 2 small ambient lights fixed to the top of the gauge unit if those aren't on then replacement is likely nessisary. Id do it myself however if you don't want to take the entire dash apart I am sure the closest dealer would be happy to charge you for them.