Assuming most aftermarket gauges are the same, I hooke my Autometer gauges up to my dash light wires. Just spliced them in behind the fuse box. As far as your power wire goes, I believe you just tap that into a 12v source that is hot when the key is in the "ON" position. Not sure exactly what color the wires are, but I just traced them in my Haynes manual. Fairly easy to do. Somebody correct me if I am wrong.
Chris
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