Took out the old pickup, easy enough, two wires white and black. The new one has 5 wires, white, black, red, green and one with no sheath. I'm assuming this is so I could wire it either series or parallel. So what do I connect to what ? I've connected green and red together, white into where the white was previously and the black/unsheathed into the previous black. So is this ok ?? Have I done it series or parallel...? Sounds pretty meaty at the moment !!