Picked up a '78 Vespa Ciao last night. Previous owner said it was running this past summer but quit one day. There's no spark and I've been trying all day. New plug, cleaned boot, cleaned and gapped points. The wires look like they were messed with.. with nothing running to tail light. I've found a few diagrams but I'm no good at reading them, maybe cuz i'm colorblind but probably cuz i'm dumbbb. Hoping someone can point me in the right direction.