is it dark when you are looking for the spark?, sometimes it is hard to see
try this, remove the spark plug and leave it hanging on the plug lead
stick your finger tip in the plug thread in the head (not all the way in) and with the same hand hold the spark plug, with your other hand give the kicker lever a push down and see if you get a little tingle/tickle through your hand holding the plug
there are plenty of threads here in regards to wiring, just use the search tab up the top
the stator wiring colours usually matches up with the loom wiring.
check the terminals inside the stator wiring socket and plug are not spread out too.
sometimes you need to put a jewellers screwdriver in there and close up the gaps to get a good contact