My boss has a 1980 motron.... Ran great when put away last year.... Trying to get it going today and did the usual stuff...changed fuel ect.... Found we had no spark... Checked points and condenser all checked out good... Then he remembered that the wires for taillight had to be connected... We had spark...put everything back together and took it off of the bench....went to start and had no spark again..... Only thing I could think of is that the taillight bulb is bad and filliment is making contact at times .... Not sure if bulb would have anything to do with it...... Any ideas? Am I on the right track?