I need your assistance...

When i have my sidelights on or dipped beams the console colours glow but you know the figures on the heater dials are these meant to light up to?! e.g hot>cold, 1-4 etc i swear they are meant too but nothing glows on mine and if they are what sort of bulb is it that needs replacing
sorry will look eventually just being a bit lazy at the mo to look as she isnt being used as still waiting on suspension parts
Rich