Just received my new MM4.2 today and am planning to wire it up with a three way switch to access either parallel/single coil/series modes (if that is possible with this pickup?), or in off/parallel/series mode (which should certainly be possible). My problem is that the wiring instructions only cover the series or parallel or single coils options, without mentioning switching. The original EBMM pickup in my bass was replaced with a Delano MC4HE pickup, which has 4 separate coils and is currently wired parallel/s-c/series. However, that pickup came with a wiring diagram for a 3 way, "ON/ON/ON" (Double Pole/Double Throw) switch, which is what is currently fitted to the bass. Unfortunatley, the wiring instructions for the single coil mode in the Nordstrands' instructions, are not comparable to those in the Delanos'. Matters are further complicated by different colourschemes chosen for the wiring on these two pickups (although that shoud only be a minor problem). So, I was hoping that if I was to publish the wiring details for eack pickup, one of you good people might be able to help me figure out a how to connect the MM4.2 to the exisiting 3 way switch! What do you think ? Here is the only information that is supplied with the Nordstrand: Parallel: Hot = Red + Black Ground = White + Green Series: Hot = Black Ground = Green + Sheild wire (tape off Red + White) Single Coil: Connect Red + White to Ground for rear coil. Connect Red + WHite to Hot for front coil. The wiring diagram for the Delano and the diagram for wiring to a 3 way switch are all here: http://www.delano-pickups.com/products/wiring/pdf/4conductor.pdf As you can see, I'm no genius when it comes to the electronics side of musical instruments, but in my defence , I did search long and hard on this forum to see if anyone else had asked the question. All I could find was the thread below, which only covers basic wiring of the MM4.2 and doesn't get into switching. http://www.talkbass.com/forum/showthread.php?t=318000&highlight=nordstrand+wiring I really hope that someone can find time to read all of this and help me out. I promise you; It will be appreciated!