For future reference, another option is to get a headlight from an 80s model that uses a halogen H4 bulb. All you would need is the lens unit, dust cover & H4 bulb. I replaced the sealed beam on my 81 650-CSR with the stuff from an 82 750H Ltd --- it was a direct fit. The lens unit was cloudy, so I cleaned it with denatured alcohol. I'm pretty sure the 7" KZ headlights are kind of universal fit.
