>My father tells me that in the "old days" (like 1930's/40's) they would
>occasionally use pencil lead for resistors...

The other trick was to put a pencil line down at least one spark plug on your
mates car. You had to remove the lead off the top to make sure the line went
right to the HV connection. Its a bit hard to do on the modern cars where the
spark plug is down in a recess.

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