Yes it must be illuminated when riding it during the hours of darkness but perverseley there are no specifications/requirements as to wattage etc. - merely that the plate itself ( not the registration mark thereon ) must be easily distinguishable
I have an Evoluzione number plate relocator with a very small bulb to light the plate ( I think only 2 or 3 watts and only about 3mm across ) and this works very nicely thank you!
Hope this helps
Andy
