Noob question; Installing intellitronix digital gauge, (tw: LOTS OF DUMB QUESTIONS)

What's weird is that in the FSM it has a D5 18 LGN depicted on the printed circuit board, but mine as I stated above has two tan wires. And the FSM don't have any D5 18 LGN wires! I've been staring at this all day.

Tomorrow Ill chop these wires up
Double check you are looking at the correct diagram