90 hp inline 6 belive 79 or 80 model

[jrandr]

no spark in 3 and 5 any sujestion on how to fix? i have tested the coil packs all good there.Dont know if its trigger or switch box.

[boats.net]

Would need to get a peak reading volt meter and correct service manual and test stator, trigger coils and bias circuit on switch box.