I have a MM style pickup that I want to drop into my bass that I am redoing all the electronics on. It has 5 wires in the lead, a north start&finish, a south start&finish and the shield/ground. I want to wire it using a concentric pot (doing both vloume and tone) and a toggle switch that will allow me to split it to single coil. Problem is, I cannot find any kind of schematic for doing this and since I have never wired one up from scratch before, i'm not sure where to start.. ??