the factory used carbon core wires with electronic ignition.
So who knows what Year One is thinking.
Electronic Ignition wires where Orange correct ?
Not that it matters
However was 1972-1974 Factory Electronic Ignition Wires 7mm or 8mm ?
Thanx
I think the factories, all American car makers, started using resistor carbon core 7 MM spark plug wires in the mid 1960s under Federal mandate I believe .
![shruggy shruggy](/ubbthreads/images/graemlins/custom/shruggy.gif)
The good Packard 440 spark plug wires where either copper core or tin plated copper wires before that
![scope scope](/ubbthreads/images/graemlins/custom/scope.gif)
I'm sure none of the American car makers used 8MM spark plug wires on production cars.