Wire diagram for installation and where can i get the plastic inserts for the buttons

i just got the wiring for the sony xe-mk90II eq, heres a picture :
top right is the ground , bottom right is constant power, blue is the remote turn on. if you have a old wire harness around you can pull out the blue ,yellow, and black wires with the metal clip on and make than fit right where the wires should go. but make sure u rap the metal clips with electrical tape so the wires dont touch or you will fry it.

i was told three pins left to right are constant hot yellow with 1 amp fuse, black ground, and blue control