<< i have forgotten and i need it for a project. i think it was +7 and -12? the middle 2 are ground? >>
Black = Ground (aka 0 volts, there are two of these)
Yellow = +12V (not -12)
Red = +5V
If you need +7V you can use Yellow as the power wire, and Red as the "ground", yeilding a difference of +7V.