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Oil pressure gage again

I studied the attached oil pressure gage diagram and would like a clarification if you understand it. The way I understand it, it shows a pink wire coming from the fuse box, this must be power, and a pink and black wire heading to the sending unit. My sending unit has always had a black wire coming off the top. So I assume that this black wire is the same as the pink and black wire.

Does that make sense? I don't want to fry the gage if it's not already bad

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  • oil pressure gage wire diagram
  • IMG_0198
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