Coils and their wiring connections 78 KZ

I've got two wires on each of my coils. both have yellow with red stripe. The right coil has a green and the left has a black. From the diagram posted I can see the yellow/red stripe is power but whats the black and green? Can I chassis ground them for a HOT wire engine test?

Those wires connect to the red and black (IIRC) on your Dyna-S. If you don't have a Dyna-S, they connect to the points in the point cover.

The black and green go the the Dyna S you have installed. They do ultimately ground the coils causing the coils to fire but you have to hook them up to the ignition plate for them to work correctly.

Later, Doug