Mopar dies when key is released

67Dart273 said

Sorry, but IF the situation is as the OP describes ( runs with key in start) there is ZERO possibility that the ECU is bad.

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Yeah cause then it wouldn't run at ALL. He's simply lost the signal from the ignition somehow. He gets 12V in the start position. My immediate reaction was ballast resistor. I wonder if he tested the new one?