Hi, I've just bought a Nordstrand mm5.4 for my MMan stingray 5. It has the 3 way switch for parallel-series-single coil. I soldered the nordstarnd to the mman preamp but it does'nt work, everything is single coil, i can't figure how to connect the wires to the preamp to keep the same parallel-series-single configuration. Any help appreciated! Thanks.