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  1. C

    No spark when cranking

    Well the Choke switch and the choke thermostat check Ok so there must be something else pulling down the voltage in the Blue circuit. The Blue wire does indeed go "DEAD" in start just as 67Dart273 said. This is such a poor design and goes against everything taught about designing electrical...
  2. C

    No spark when cranking

    If I understand what 67Dart273 is saying is that: In Start position the ignition switch no longer provides 12 volts to the blue wire. In Start position the ignition switch provides 12 volts to the ballast resistor (brown wire). I have read it both ways on different forums. IGN1 should always...
  3. C

    No spark when cranking

    I am getting +10.5 volts on the coil. New coil and ballast resister. The blue/trace wire on the top pin (1) supplies power. I will have to take you word on the "Existing Wire" going DEAD on crank. It has always been my understanding that this is the power pin needed for the ECU to operate...
  4. C

    No spark when cranking

    Ok so this is a problem I have been trying to fix for over a year now and I finally stumbled onto some additional information. 1974 Swinger /6 with 5 pin ECU. I have checked wiring, cleaned/sanded/star washered the ECU and Voltage Regulator. I have replaced, ECU, Dizzy, Voltage regulator...
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