In my study here I see reference to a "male" pin set in the tach amp cap but when I unscrewed the one that was being worked on it does not have anything in the cap.
The female pin connections are then exposed and some appear to be a little loose. Is there a male connector that bridges the female plug?
If so, does anyone know the pin out on these that it could be bridged with wire if that is in fact what is needed?

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'99 S420 - Mommies
'72 280SE 4.5 - looking to breathe life into it
'84 300SD Grey - Sold
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'78 Ski Nautique