My dart wont die

2 wire ballast is normal for a 68 Dart so that is good; sounds like most the stock wire colors should be there. Remove the blue wires from the one end of the ballast resistor while it is running and it should stop running. If not, then , with these 2 blue wires still disconnected, check with your test light and see if there is voltage at the other end of the ballast (with the brown and blue wires); there shoudl be no voltage there but wil lbe if the car does not stop running as above.

It could be that that the 2 wires from the ignition are swapped; some further test steps can tell that.

BTW, your car did not originally come with the electronic ECU; it had points. So, the stock diagrams will not show the ECU. BUT still download them so we can all be discussing the wires from a commonly known diagram.

So, tell us, did you wire in the ECU or was it there when you got the car? This is important to know. It is not clear from the prior posts.