Terminal to terminal is the way to test the secondary windings as the coil itself is composed of two smaller coils which are joined together internally.. Both terminals fire at the same time so both spark plugs must be hooked up to complete the circuit. I’d say your coils are good at 7K ohms.
The copper wire coming out at each end are for the primary windings. One goes to ground and the other goes to the points. Testing these leads should give an extremely low ohm reading.
