How does one take out the headlamp cluster to change the sidelight bulb ? I read long ago on Technical matters that there are 5 screws to undo, but which ones ? And, when I've got the cluster free, how to change the bulb ? The socket /holder appears to be a double tube pale grey plastic fitting. Does the holder / socket pull straight out, or is it a bayonet fitting ?

I see three screws holding the cluster at the top, two metal and one plastic. One of the metal screws is beneath the radiator grill, which has foiur plastics 'fixings'.

Can anyone advise ?