3 pin dome light switch

75slant6 said

That looks like the same thread size as this one, which I bought, but it’s way to small for the hole in the jamb.

70 71 72 73 74 Dodge Mopar Cuda Challenger Door Jamb Jam Light Pin Switch Nosr | eBay

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What size are the threads in your door jamb? Maybe you can reach out to the seller and confirm thread size? Here is another listing to check out.

Door Jamb Switch 3 Terminal Fits 71 72 Dart Duster Charger RoadRunner GTX Mopar | eBay