no spark in start

AJ/FormS said
If it cranks then the block is grounded, and the ignition is fine...... except the ECU is mounted on the apron, so the ECU has to be grounded to it, and the apron back to the battery. If the coil is firing with the spare D spinning it which is still controlled by the apron mounted ECU, then the ECU is working so is also grounded. The only thing not addressed is the ballast resistor during cranking, and
Dana67Dart is on the trail.

I check the voltage on ballast when cranking and it drops to 7.5volts. I do have the FBO set up with the jumper wire across the ballast. Also have extra ground with from the ecu to the motor and from the motor to the frame. Battery is mounted in trunk and grounded to frame.