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Re: No spark
if using the original wiring but also an HEI dizzy then that section of the wiring will need to be redone. the original wiring is not lartge enough wire to supply the needed amps to the HEI dizzy. you need a 10ga wire from ign switch to dizzy and at least that from power supply to ign switch.
thats why I suggested the "hot wire" process a little earlier as it will bypass any truck wiring and let you know right away if your dizzy is operating. if it does then you know the power supply problem is in the truck wiring.
curious now, what exactly are you using for truck wiring?
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