> Because the Duralast brand wires from Autozone contained an extra wire, I
> dissected it. Below the black rubberish 1/16 outercovering was a white
> plastic(?) that made up most of the diameter, but for a 1/16 black strand
> in the center. Opening this strand revealed white plastic hairs or fibers.
> Nothing seemed metal. Although these were tiny, I imagined that they were
> the conductor, surrounded by 2 black layers and one white layer of
> insulation. Is this correct?
Hard to be sure without examining them in person, but my guess would be that the
black 1/16" strand is the conductor, and the white fibers in the center are some
sort of strength member (fiberglass, perhaps).
It's unlikely you will find metal-core wires at AutoZone (or similar). If you
really want to be able to use AutoZone wires, then get a dizzy cap from a MGB or
similar, with push-in connectors instead of the standard insulation piercing
screws found on the original TR2-4 cap.
Randall
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