Electronic ignition problem on new install

The first thing you should is read the instructions for the Blaster 2 coil. It will tell you [a] whether a bal res is needed & what it's value should be. Might be different to Chrys bal res.
The factory bal res that connects to the coil is 0.5 ohm; if the ECU uses a dual bal res, the other bal res is 5 ohm. Did you mix them up?