DETAIL how you are measuring this....... You have the other probe "where?"
With battery voltage jumpered to the coil+ and module +..........
With one probe of the meter on the HEI screw hole.......
With the other probe on ground.......
YOU SHOULD READ ZERO
With the other probe on "battery" you will read 12V and neg or pos depending on which probe where IE pos probe on battery, neg probe on HEI screw hole, should read +12 or "just 12" depending on meter
