Need help, no spark!

These should not need that. Tach adapters are for stuff like CD/ MSD ignition boxes. These are a 'switched' ignition, just like GM HEI, Mopar ECU, or breaker points

"Back in the day" I ran Tiger/ Delta/ SST CD ignition and had one HECK of a time getting a tach to work. Interestingly, the Heatkit tach in the day had an magnetic pickup which would deal with it. "Sun" had come out with a brand new version "one piece" "all electronic" tach about 1971?? ish. I waited fore one........and......it didn't work......

Ended up putting a cable drive Jones/ Motrola in the car A guy had a Prestolite dual point hemi tach drive distro for TWENTY FIVE BUCKS!!!