GTX 760: Can I plug 6 pin into 8 pin?

Chiuy

Honorable
Sep 7, 2012
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I bought some sleeving wires, apparently I got the wrong kind and I got 2x 6 pin extension sleeving wires instead of 1x 6 pin and 1x 8 pin. Is it okay to plug in the 6 pin into the 8 pin or should I just go get an 8 pin wire? I have the EVGA GTX 760 SC 2GB and a 730 PSU.

I'm just asking of whether or not I can do this cause it takes a week to ship those sleeving wires.
Not a big deal if I can't. I just want to know whether or not it's possible and safe.