[drolston]

Definitely not carbon "resistor" ignition cables. The cheap ones are also affected by humidity so that the problem changes with the weather. If you are running the spark plug wires through tubes, you may not be able to see the shorts, even at night. You can use the coil wound wire center ignition cables to for radio suppression without causing spark problems. Be sure to get 7mm spark plug wires, not 9mm, or you will have problems getting them to fit.