i know newer GM electronics like the back of my hand so i wire them how i want it to work for me. after i get them how i want them i open the schematic in windows paint and redo everything and print it out so if i sell the car someone can figure out what ever they need.
example: the pink wire to the MAF is a 12v switched power that controls a few other sensors. it now also is the switched 12v to my alternator since the corvette alternator needs to see that to turn on unlike the camaro alternator.