The two power /round wires are there to carry the amperage load that the PC could potentially draw.The red wire to acc is fair enough, but why are there 2 yellow wires and 2 black wires?
Now, it would make more sense to use a lower guage (thicker) wire instead of two thinner wires. I'm pretty certain they use the two thinner wires as a cost-saving measure, although that's just speculation.
Use the yellow and back wires from a HDD connetor and run the line to your screen.I thought it would have came with a 12v output wire to power my screen off. But donít understand why there are 2 yellow wires and 2 green wires.