I would have thought you could get one from most of the British bike parts suppliers. I've just had a look on Andover Norton site and found this.

http://www.nortonmotors.de/ANIL/Norton%20Website/norton/parts-list.php?Model=n750_1&Plate=026&Part=3

I don't know if that's a genuine Lucas or a replacement, but Burton Bike bits or any of the other places should be able to help.

If you want a cheap fix we used to go to a car breakers and buy a sealed 700 headlight for a mini, or any of the other cars they fitted for a couple of quid. Gets you on the road until you find what you're looking for. That's if breakers have headlights for these cars now.

email (option): horror@blueyonder.co.uk

The Lucas 700 unit for a motorcycle says motorcycle on it and they dip up and down. The 700 car units dip to the left.

Like I said, it's was a cheap fix for a couple of quid while you sorted out another. I never noticed any difference when riding and I've still got old Lucas headlights in the garage with them in.

email (option): horror@blueyonder.co.uk

Brilliant, thanks guys, really good of you. I'll let you know how I get on!

Michael