40hp only one wire with spark

[Thaiboxer04]

I am helping a friend fix a 1979 40hp he just purchased. It only has spark on one coil. Before swapping coils to see if the coil is bad... i had a question. I noticed on the right coil (with spark)...there is a green wire and a black ground wire to the coil with a small ground jumper. The left coil (no spark) there is a green wire and a small jumper wire but no black ground wire. Is there supposed to be a wire from the right coil that bridges over the left coil so both coils are grounded?

 

[Thaiboxer04]

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[Thaiboxer04]

OK well i just checked the coils and they are both good. I switched the two green wires and it looks like the green wire with white stripe isnt kicking the coil on. Solid green wire is good. It's a new switch box though. What should i check next?