...KNOWN ISSUES WITH THE BOSCH CDI BOXES; Please be aware that when trying to convert the standard 914-6 tachometer to the 10k version, you will need to know if you'll be using "breaker-points" or a "photo-eye sensor" since the internal electronic board has to be compatible with your type of ignition system. Also be aware that some BOSCH CDI boxes, particularly the one ending with the .004 have shown to be more problematic, the more common BOSCH CDI boxes end with a .001 part number and are the ones that seem to work --- Another solution or alternative to the BOSCH CDI Box... If you want your ignition to look correct but work better, then contact "Perma-Tune" and have them replace the BOSCH CDI box internals with their Perma-Tune electronics. This way, you have new and fresh electronics, you know exactly what you have, if it breaks you can have it fix easily, etc.

You can contact Perman-Tune here http://www.permatune.com or you can call them at (631) 909-1011, ask to speak to Lonnie (Approximate cost to convert your BOSCH CDI internals to the Perma-Tune is $450 each). New address: Plasmatronics, 3 Grace Court, Center Moriches, New York 11934.