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Discussion Starter · #1 · (Edited)
Need help with new distributor.

I have a 1978 Ford F-150 w/460 engine & C6 trans. The vehicle employs the Ford DuraSpark Electronic Engine Control (EEC) system. I purchased a Pertronix Flamethrower Distributor #D132711 and Pertronix Flamethrower coil #45011. I need to wire the Pertronix components using the wiring harness from the DuraSpark EEC system. The DuraSpark system harness employs a positive and negative connection for the coil and a 3-wire connection to the stock Ford distributor. The Pertronix Flamethrower distributor has only two wires. Pertronix instructions state to just hook the positive and negative from the distributor directly to the coil. Obviously those instructions do not take the stock Ford DuraSpark EEC and factory wiring harness into account.
The Ford distributor has 3-wires colored purple, black and orange. See photo. I have also included a photo of the Ford schematic.

Question: What two wires in the Ford distributor 3-wire connector should be used for the Pertronix Flamethrower distributor?


 

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The pertronix distributor does not require an accessory box.

Red to 12 v run and crank and black to coil neg.









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Discussion Starter · #3 · (Edited)
Scotty, thanks for your reply. I suspect your definition of "accessory box" is the DuraSpark ignition module. I was discussing this with a friend of mine and he stated that the distributer I purchased actually replaces the entire stock DuraSpark ignition system as well as the harness that fed my stock distributer and coil. All I would need to do is use the red wire from the ignition switch that is currently in the plug of the ignition module.

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The plug on the ignition module has a red and white wire but the other side of that plug has a white and a red/blue wire. The white wire connects to the red wire on the other side of the connector on my truck.
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Therefore I'll tap into the white wire for the 12V ignition as that wire bypasses the ballast resistor that Pertronix specifically states not to use.

Is this your understanding?
Rick
 

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The black wire on the Ford distributor is a ground. In 1978 Ford had a Duraspark I and a Duraspark II. Your truck has the Duraspark II. The blue wire strain relief on your module identifies it as a Duraspark II. The one for Duraspark I was red. They were only used on certain cars sold in California to achieve emission requirements. Duraspark I was a higher energy system. Duraspark I had no ballast resistor, a different coil, a different module, slightly different wiring, larger diameter spark plug wires, spark plugs gapped at 0.060" and the larger diameter distributor cap.
duraspark_011.gif
 
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