Fan Contorl Unit Light Replacement

Hello Folks,

I have a 2002 Octavia Ambiente, 1.6. I'm not too sure whether there will be a light in Fan Control Unit (don't remember seeing a light there!!). But, it is getting difficult to check what position the fan control is etc., while driving in nights. Could someone clarify whether there IS a light and how to replace it?

And, I have A/C in my car and the AC and air circluate buttons lit if I press them.

Many thanks