Hello,
There are several types of coils and it is important that you use a compatible coil for your ignition system.
There are coils for points ignitions and coils for electronic ignitions.
However, some of the electronic ignition conversion kits and the 123Ignition, do allow the use of a coil for points to be used.
And in both cases, points or electronic, there are coils that use a ballast resistor, 9 volt, and coils that do not, 12 volt.
If your distributor is still using points, I suggest you use a Bosch blue coil that most air cooled VWs use, if you do not want to replace yours with an original coil assembly, either used or new.
The Bosch blue coil is a 12 volt coil and it does not need a ballast resistor.
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Eric Hi Performance Automotive Service (formerly OVO or Old Volvos Only) Torrance, CA 90502
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