why have 40 wires all over when all you need is 5? and why use them thin wires when you can pull them all out, and use only the fat wires. its a lot easier in my eyes, to strip the plug, then install the ones needed, vs taking the unused ones by one in the birds nest.
you try to help yet you make it sound harder. the diagram shows us where to put the ground, if you want to trust your own ground, "you" do so, dont tell some one to find a new ground cause your lazy or something. ( you dont even say what pin, just others????) < thats not help.