Being an Italian spec bike, the ZXR came with only one main beam, although both would come on with full beam. The r/h lamp unit was actually a full beam only unit which made it look like a bulb was out.
I managed to track down a UK spec NOS headlamp for the R/H side. The wiring is all there to take it so it should be straight forward.
This meant the nose cone had to come off…
Other Italian market peculiarities are the flash/pass light illuminate low beam only, not high beam, which means if you ride with lights on, you can’t flash anyone as they wont see them flash since they’re already on!!
On the plus side, the ITA market model also gets an extra horn!!