ignition question

[egp8111]

I'm getting rough running on on ing. circuit. I plan on swapping the connectors to see if the miss moves to the other circuit. If it does is there any good way to determine if the problem is prior to the ign. boxes or after. I've changed all the plug wires and caps to no effect.
Thanks
EG

[Av8r3400]

What about the plugs? Ar they new? Gapped properly (I gap mine close at .018-.020")?

There are instructions for resistance checks in the Heavy Maintenance Manual for checking the stator coils and the ignition coils.

[kitfox2009]

How about the ground wires from the modules. If they are starting to break up this may result in rough performance. From my experience though,they usually just break completely and that module is dead.
Have fun, just keep looking
Cheers
Don