1965 273 4-bbl intake. What is this connector for?

I cannot figure out what this two prong connector is for. Nothing is connected to it right now. It is on an original 4-bbl intake manifold in the back on the driver’s side.

This is in a 65 Dart hi-po 4-speed, manual steering no AC car with an aftermarket 4 bbl.

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I think somebody plugged a vacuum port with a sender.
Yep, someone just plugged the hole.

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