Need help with gauge install

OK i'm going to install my fuel pressure gauge, except i bought it used and the wires that control the power/ground/lighting aren't in the harness. Can anyone tell me which ports they go in or shoot me a pic of the back of the harness?

There are two rows of 5 ports. There is a red power, black ground, and white for the gauge lighting.

Here is a pic of the wires that are already in there.

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