I have an East uni 5 coming. I chose it for its many built in tuning options. I also ordered a pair of nord dual coil pups. The way the pre amp is made it covers all my eqing, passive /active controls and pickup balance with the knobs. My bass has a 3 way toggle already that will go unused with the new pre. I would like to use the 3 way toggle to alter pickup configurations but dont fully understand the process. What are some common wiring options for dual coil pickups?