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

Ok so the one with the vampire clip (blue wire) is the one that I see connects to the jvc head unit that the previous owner had.

The ghetto splice with the red wire and electrical tape is the one that I spliced into for the pink wire as per intellitronix instructions. See how it's beside the yellow, black, and blue wires?

Unsure if this is right at all...

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