hey folks... i need some help wiring passive barolinis into my mexican fender jazz bass. coming from my original knobs i have a black and yellow wire for each pickup. both wires have copper-colored wires on the inside. coming from my barolinis i have one black wire with two wires sticking out from the end, one copper-colored and the other silver-colored. which goes with which? i don't want to wire it backwards... the diagram on the bart website doesn't make a lot of sense to me. thanks!