you'll have to forgive me as im quite rubbish at explaining things, but on the 8 pin to the 6+2 pin, on the 8 pin side which goes into the psu there is an empty space on the pin the empty space is across the same line where the yellow wires are goin in, and on the black wires there are 2 black wires goin into the one pin, if any of that makes sense
the psu is OCZ ModXStream Pro 700w Silent SLI Certified Modular Power Supply