Climate control panel and light switch lighting dead

[clarkey1984]

Hi all, I thought I'd have a crack at changing the bulbs in my ac panel above the stereo and also the ones in the headlight switch panel as hardly anything works, so imagine my surprise after fitting new bulbs and it's exactly the same, the light switch side is completely dead, no light at all from any of the 3 bulbs and on testing with a multi meter I have 0v on all three, so that is dead, although it's just the backlighting circuit, the headlight themselves and fogs etc all work as normal.

Then into the ac panel, the left hand bulb lights up fine, the middle one is dead and reads 0v, and the right one comes on dimly, with readings that fluctuate between 3.5 and 5 volts, whatever could be going on here?

Many thanks in advance