All silicone "Extreme Heat" construction and spiral wound graphite conductor. These are suppression core wires. They help eliminate radio static and are recommended for solid-state ignition modules.
Concour correct from the brown coil wire to the FoMoCo logo on the plug boots.
Specifically recommended for Pertronix® electronic ignition.
Large data plate (4.125"x2.25")
The only difference between "A" and "B" wires is the distributor boot used on the wire.
** If you experience arcing from the plug end to the ground, you should verify that your resistor plugs have a gap of .026
Install Directions
Knowledge Base | 
