The ignition barrel has stopped illuminating in my 2001 D2 (it used to come on with the interior lights when the doors were unlocked, with the remote fob).

even though I have changed the bulb and there is a 12v supply to the bulb itself, it still doesn't light up.

Any assistance would be appreciated.

Thanks,
Nick

If you have a supply and the bulb is ok then it must be a faulty return to earth.