ok, well i decided to have fun with a usb wire. I read on the side of the wire ans it said 30V, which i take to mean 30 volts input. So i spliced the wire and i came up with 4 wires(red, green, white, black). All i want to know is which wire is pos+ and which one is neg-ground-. Ive read online and all i can find is black is ground. Which one is pos+. some say red some say white. any ideas? by the way im just doing this for fun little project of mine. Any help is accepted,thanks
