You are on your way to a fully working game. You will get that AS relay figured out I'm sure.
FYI at the start of each ball, the #1 lane (behind the drops) should be lit. And yes each spinner revolution will advance the lit light among the 5 lights. Also keep in mind however that on 3-ball setting the #2 lane (the leftmost of the top 4) will always be lit, regardless of spinner hits.