Show us some odd ignitions from the past

MARK TEN B..on my Mazda! i dont think it works as the switch IN/OUT doesnt seem to do anything but when its CD OUT, voltage to the coil is like 5v and when its CD IN it reads 12....not ~ 300 i was expecting. i can hear the high frequency switching of the transistors maybe the big storage cap is bad.
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https://worldradiohistory.com/hd2/I...X/70s/74/Poptronics-1974-09-OCR-Page-0017.pdf
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