are dash switches (eg fog light) required to be identified with a symbol or text? or can they just be blank?

also, are they requried to illuminate when active and/or be backlit (I assume this will be required)?

cheers

Should be marked as you suggest plus they should light up when active

[Edited on 13/2/09 by Mr Whippy]

No, in general not for SVA. However, brake warning light must have symbol and a few specified controls must have a tell-tale which lights up when the switch is on (e.g. fog light, main beam)

IVA introduces the requirement for switches/telltales to be marked. The symbols required are in the IVA manual draft.

Switch isn't required to light up when active, but if it's got a light in it then it can be a telltale.