Took the "new" 90 out for a decent run today for the first time, it's genuinely only done 46K miles and everything worked as new. All going well, although I did sense a bit of power loss at the top end, perhaps a slight misfire, then, it started to get dark. Turned on the lights, there was a hiss bang, and the cabin filled with smoke from under the dash/steering column area. Pulled over, turned it all off and opened the windows to let the smoke out. Started her up again, no sign of smoke, but no sign of sidelights/rear lights either. Made a dash for home before official lighting up time.
The last owner, grandson of the original, has installed a radio. I bet that's where the problem is, faulty connection. Engine, well it could be a blocked fuel filter, dirty carb, condenser, points adjustment ....... you tell me.
Isn't it great the way these vehicles kick you in the balls when you start feeling good about them. :-(