[drolston]

Carbon core ignition wires can be unreliable if not terminated and handled with care. Solid core ignition wires are more original and very reliable, but will cause electromagnetic interference. I run Pertronix electronics in my crab distributor and they recommend spiral wound core ignition wires, which I did. Very reliable so far and no radio interference. My el-cheapo temperature gun works fine with the engine running, as does my digital volt meter.