electrical problem i think?

Yup, that is a big secret about Mopar stock ignition systems. I have to wonder how many systems were taken out when the real problem was putting in the wrong ballast.

If the ballast you had was 2 ohms, realize that is the cold measurement. When warm (which takes only 2-3 minutes of idling), that particular part has a resistance of up around 7 ohms. That level of resistance simply starves to coil of adequate current, and the spark gets very weak.

The original ballast for your car, PN 2095501, has a cold resistance of 0.5-0.6 ohms and a hot resistance of up around 2 ohms. The closest readily available at the box parts stores is the BWD RU19, which has a cold resistance of 0.6-0.8 ohms and around 3.5 ohms hot.