What do the numbered connectors in the DuraSpark II schematic represent?

Per the legend: 1 & 2 are module power connectors, 3 & 4 are module control connectors, 5 & 6 are distributor connectors, 7 is the coil connector, 8 is the coil resistor, and 9 is the starter solenoid.

What wire colors go to the DuraSpark module?

The diagram labels Red, White, Green, Black, Violet, and Orange wires at the module connectors.

How is the coil resistor wired in this system?

The resistor (pot or wire), callout #8, is fed from the ignition switch in the RUN position and connects through the F splice to the coil connector (#7) at the TFI coil.

How does the coil get full voltage during cranking?

A wire from the ignition switch in the CRANK position feeds through the starter solenoid's I terminal (#9), bypassing the resistor to supply the coil while cranking.

Where does the distributor connect to the module?

The distributor wires pass through connectors #5 and #6 to the module control connectors #4 and #3 on the DuraSpark module.

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Ford DuraSpark II Ignition Wiring Diagram - Module, Coil & Resistor Schematic

Color-coded wiring diagram of Ford TFI/Duraspark ignition module circuits

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Wiring diagram showing TFI coil and Duraspark module circuits with color-coded wires and numbered connector pins.

AI caption October 2011 · Photo 898 of 1799

This document is a hand-drawn color wiring schematic for a Ford DuraSpark II ignition system. It shows how the DuraSpark module connects to the distributor, TFI coil, ballast resistor, ignition switch, and starter solenoid. A numbered legend identifies nine callouts: connectors 1 & 2 are the module power connectors, 3 & 4 the module control connectors, 5 & 6 the distributor connectors, 7 the coil connector, 8 the coil resistor (labeled 'Resistor (Pot or Wire)'), and 9 the starter solenoid (with S and I terminals). Two ignition-switch feeds are shown: one from the ignition switch in the RUN position (through the resistor via the F splice and J splice) and one from the ignition switch in the CRANK position (from the solenoid I terminal, bypassing the resistor). Module wire colors are identified as Red, White, Green, Black, Violet, and Orange. The distributor connects to the module through connectors #5 and #6, and grounds are shown for the distributor and module circuits. A reader can learn the complete wiring path, connector functions, and wire color coding needed to install or troubleshoot a DuraSpark II ignition conversion.

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Frequently asked questions

What do the numbered connectors in the DuraSpark II schematic represent?: Per the legend: 1 & 2 are module power connectors, 3 & 4 are module control connectors, 5 & 6 are distributor connectors, 7 is the coil connector, 8 is the coil resistor, and 9 is the starter solenoid.
What wire colors go to the DuraSpark module?: The diagram labels Red, White, Green, Black, Violet, and Orange wires at the module connectors.
How is the coil resistor wired in this system?: The resistor (pot or wire), callout #8, is fed from the ignition switch in the RUN position and connects through the F splice to the coil connector (#7) at the TFI coil.
How does the coil get full voltage during cranking?: A wire from the ignition switch in the CRANK position feeds through the starter solenoid's I terminal (#9), bypassing the resistor to supply the coil while cranking.
Where does the distributor connect to the module?: The distributor wires pass through connectors #5 and #6 to the module control connectors #4 and #3 on the DuraSpark module.