Need help understanding Mopar ignition…no spark

Understand that there are two conditions for power, and they can lead you down a rose colored path

In "run" the key feeds the ballast which feeds the box, and with key in "run" but engine stopped, the coil should be drawing current. This causes the voltage to coil + to drop and should be somewhere around 6-10V or so, maybe a bit higher or lower, but certainly not 12, which means the box is not causing the coil to draw ---by properly grounding the coil neg

I "start" the key KILLS the "run" voltage, and the ONLY starting power is from the bypass, IGN2 circuit, so when using the KEY in start (NOT jumpering the start relay) the coil + should be close to battery voltage. So if the starter drags the battery down to 11.5, then the coil _+ should be close to that voltage

It is IMPORTANT, therefore, to evaluate coil spark with the key in "start" rather than jumpering the relay. "Rig" a solid core wire-even a low voltage wire hung "in the air" and to a spark gap, either tester or widened plug, and hook that to the coil tower

You should get rhythmic sparks nice and hot and blue at least 3/8" and typically 1/2" long