1974 Brain Box saves the day.

67Dart273 said

China junk, end of story. As I said, clean it out, stick a GM HEI 4 pin in there. The sand is deteriorated potting material.

Click to expand...

The fine sand inside was sand, not potting material, this was brand new a year ago. The good mopar brain boxes do not have sand filler layer in them, just the sealing gel.

Thanks