Hey people, I have participated to the Hilo wiring thread few weeks ago, where we talk about 2 single coils and I think I got the different combinaisons of two single coil pickups, but I just did understand how it works with 2 humbuckers, in particular filtertrons. I tested the north polarity on my guitars (which don't sound out of phase to me) and here is my results, they surprised me as I expected to have same results for both pickups : On my LesPaul : Neck pickup : north facing the bridge Bridge pickup : north facing the neck That is to say that the two pickups are the same (same south to screws pole pieces orientation to be precise) but as they are installed one reversed to the other, then the polarity is changed as described above. On my Filtertrons* : as usual just the opposite Neck pickup : north facing the neck Bridge pickup : north facing the bridge 1/So I wonder if this is normal to have both magnets in opposite orientation ?? 2/Then, what is the standard for Gretsch filtertrons guitars ?? 3/ Moreover, what is the conditions to have a out of phase humbuckers ?? *I have to say that I have opened and modified the pickups ... many times, so my set-up isn't stock and I could have made wrong rotation of the pickup itself. Thanks experts !