hey andrew, no resistance load across 5v cable, yes i measured the volatge across +5 and +12 and i get close to 7 volts if i put the ground cable from the volt meter to red +5 and the red from the volt meter to the yellow +12 i get close to 7 volts and if i do the oposite black volt meter cable to yellow +12 and red volt meter to red +5 i get - (negative) 6.something volts. and sorry i told u i was using and ATX but i think is the other type.