Hei upgrade help
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Senior User
Joined: Apr 2007
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Hei upgrade help
So i decided to get rid of the duraspark in my 78 f250 and put in a hei ignition module. But i wanted to know is where there is a resistance wire because the coil is only getting only like 8 or 9 volts, and i have no ballast reisistor. I already did the hei upgrade on my other truck and since it couldnt find the wire i just used the old coil wire to trigger a relay so i could get the 12 volts to the module. But i didnt want to do it on this truck since i already have 10 relays and dont want to add more more.
