Car wiring diagrams: Ford Duraspark Ignition Wiring Diagram, wiring diagram, wire wiring harness, schematic circuit diagram, wiring diagran, wireing diagram, wirring diagram, wiring daigram, wiring diagrams. Let's Have Some Fun Wiring the Duraspark II This ignition system is a popular swap into earlier cars and trucks. Wiring it up is quite straightforward..Both the Duraspark system and the GM HEI have been around since the 's. The stock Duraspark is by most accounts a rugged and reliable system, but.Looking for free Ford wiring diagrams? Here you go. As these are the free wiring diagrams, they are not full version but they are part and parcel of owning a.