Interior Light!!!!!!

[umpkin]

mine used to work, i noticed the other day it no longer does

i have consulted the bible and it seems i have a time control unit that does all this, the bulb is fine as the light can be switched on, but when the doors are open (both sides do same) i dont get any lights in the door panels, nor the dash light, nor the interior light, it was last seen working when i was changing my headgasket a few weeks ago.

does anyone have any ideas where this timer box is, or other thing that could be causing this, as my alarm works off this, and would rather it working.

Cheers for any replies.