Peter Green with the famous Greenie
Oh, yes, the Peter Green mod. A very nice one.
You know the story. The guy from the guitar workshop screwed up Peter Green's Les Paul and mounted the neck humbucker with a flipped magnet. The result: out of phase or reversed polarity of the neck pickup and a weird nasal sound in the middle position. The guy realized something's wrong and tried different workarounds to solve the problem. The best thing he could came up with was to rotate the pickup with the screw poles towards the bridge. Of course that didn't change anything, because you can't reverse the polarity by moving the pickup around. If he knew, he could just flip the magnet the other way and fix the damn pickup.
The best part is that everybody absolutely loved that sound and it earned its place in the history of blues guitar. That's the reason you are here. You want that sound. You want to "mess up" your guitar too.
The problem is it's a little bit exhausting and difficult to dismount, crack open and flip the magnet of a humbucker.
Good news! You can invert the phase without flipping the magnet and it works with single coil pickups too. How? Well, you mess around with the other end of the pickup. You just invert the neck pickup wires inside the control cavity of your guitar. Instead of ground to the case and hot to the pin of the volume pot, you solder the wires the other way around. And, voila, your pickup is now electrically out of phase (not magnetically like the original).
The only impediment here is that, compared to the flipped magnet state, the pickup with inverted wiring is now out of phase with the whole universe, not just the other pickup. Replacing the ground with the hot wire is like sitting on your head. It's against nature. So, the pickup basically objects to this by humming and buzzing like a single coil. It doesn't matter if it's a humbucker. You'll need the same tricks and tools as for a single coil to make it quiet (AC grounding, noise gates, etc).
