On my '77 Puch/Penny Pinto, the headlight has been giving me trouble recently. I was driving it about 11 at night, and the headlamp crapped out entirely. Luckily, I was a stone's throw from my house, and before I turned into the garage, the light came back on.
The next day I took out the old bulb (6v, original bulb, in working condition) and replaced it with an Autozone bulb (12v, much brighter). Fired it up, works like a dream.
The headlight crapped out again soon after giving the same on-again-off-again problems. The strange thing about it is that I can't seem to find a catalyst!
any help would be lovely.