im trying to install a mach system in a non mach. i don't have the power harness. any ideas i got amp harness from the back i cut the gray with orange and the gray. i know the purple is the power and the ground is the thick oen that's black and purple. but i still got 2 more wires not a clue what they are.2 are black with green the other is black with white. hope someone understand my problem