im the ceramic thing under the coil is on my 72 240z and some one has lost the points and put some sort of optical sensor in the dist can i bypass the i think it is called a balist for a hotter spark

all depends on the optical unit that is being used. If it's a low voltage unit, removing the ballast from the circuit will burn up the electronics of the optical pick-up.

The Mallory Unilite will burn up after 10 volts, so a ballast is needed. Not sure on the others.

Dave

Dave is right.

Some electronic ignition systems use a full 12 volts (no ballast needed) and some use the 8-10 volts (ballast needed).

You need to know what kind of system you have. If it's a 280ZX distributor, you don't use the ballast but you need a 280ZX (12 volt) coil. The stock 240-Z coil is an 8 volt unit.

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