correct neutral safety switch for 73 with c4?

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Aug 23, 2018
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tc, mn
My Car
it's a '73, and it's brown. still tryin' to figure out the rest.
Well I managed to fry some of my NSS wires on my headers. Looking for a replacement NSS, but all the ones designated for a c4 only have the 4-prong plug (link). My car also has an additional 2-prong plug coming from the switch, but the ones I can find that look correct are designated as only being for a c6 (link). Will the c6 switch fit on my c4? They look the same, but that's not always reliable. Looking at a wiring diagram, it seems like the wires in the 2nd plug only serve to energize the seatbelt warnings, so I won't be heartbroken if I can't keep them working, but I would prefer to use the correct part if it's an option.

Thanks in advance!