Moped Army

I have a 1980 honda express. The engine turns over, the headlight turns on for a short moment while it's turning over, but i can't get a spark from the spark plug. I just bought the sparkplug not too long ago (a week). It was never running so i don't think the sparkplug has been fouled or anything. I have sprayed starting fluid into sparkplug hole and still haven't gotten it to start. I've also spent countless hours with the points and ahve set them numerous times and replaced them twice. Any help would be very appreciated. It's been a long 2 years of not having this thing running.
thanks,
diego