this might be a stupid question but here it goes, can ground and power wire be used for the opposite purpose, like say using power wire as ur ground, i dont mean not having a ground wire, jsut using the power wire to do the same thing the ground would, and vice versa, like using the ground wire to power ur amp from ur distrubution block. sorry if this is a stupid question jsut seen a install once using what looked like it said power wire as there ground so jsut been curious, thanx in advance