Quote:
Originally Posted by emf
Every time a switch (in this case, a set of points) opens and closes, RF noise is generated. Add that to the original, uninsulated, unshielded copper spark plug wires and you have an antenna emitting high energy noise into the engine compartment. If you want to run modern electronics, you MUST remove the noise. Shielded spark plug wires and a modern style cap are a must. I know it's not for the purist, but most of your problems will go away...
Frank
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X2.
Was reading the reviews, some complained they did not help with LED shop style lighting. These will only help with noise generated/emanating from the wiring they are attached to. In LED lighting where the noise is in the fixture and not in the power cord and wiring directly attached to the power cord, they will not work. Basically the ferrite material in the cores (they are not a magnet) absorbs the high frequency energy that cause the interference.