Sorry to resurrect this thread again, but it seems the best way to trya and resolve my issues.
I found that 3 of my dashboard knob where not illuminating, Fog lights, Heated door mirrors and Headlights.
Bought 3 x 286 12v 1,2w capless bulbs from Halfords. Couldn't get the bulb to light in the Fog knob, until I realised that the whole knob is a screw fit, so tightened it up and "Hey presto!".
But I can't seem to get the Headlight working at all, even when I realised that it doesn't come on with the lights it is linked to the ignition.
So is it possible that this bulb should be a 2721, rather than a 286?
Any other suggestions gratefully received.