
Pos 1: bridge
pos 2: bridge (slug coil only)
Pos 3: neck and bridge (in phase)
Pos 4: neck and bridge (out of phase)
Pos 5: neck
I don’t think the neck pickup is selected in pos 2. Do you have a pic of the installed wiring?
This is VERY crude, but it was faster to photo-edit to show what I meant because the switch layout doesn't match my templates. Left side is cleaned up a little with Duncan color codes overlaid. Right side traces the output to ground paths in P4. Blue is Neck, Orange is Bridge. The outlined segments are the internal switch connections. It is what I said earlier Bridge and Neck full humbuckers out of phase in parallel.
If you want these 5 positions with 2 and 4 series connections I have an almost identical scheme on a regular super switch layout.. It just has 2,3,4 in a different order. I can post an updated one here if you want....let me know
1: bridge
2: bridge and neck split, in series
3: bridge and neck parallel
4: bridge and neck series out of phase
5: neck
To have the 5 positions you mention would be great. 2 humbuckers in series without splitting them is useless.
The switch I have is the schaller M switch. L, F, X, R, are the common lugs for each pole of this 5 way switch.

Here you go..let me know any questions. I use symbols and shorthand for some terms to help fit on a printed page at a larger size.
I don't know what pickups you will use. This assumes conventional Duncan PAF types So...this requires the Neck pickup magnet to be flipped 180 to make its inner (slug) coil South. This allows P2 inner (split) coils in series to be in phase hum canceling.
Photos I found of the switch indicate it would be installed with the A to M side face outward toward the guitar edge, the same as your pen drawing. So I've oriented it that way. If that's incorrect, let me know I'll fix it.
I remember why I only used the variant of this scheme only once. It's a pain to wire. It requires a lot of short jumpers close together in tight space. I try to consider physical layout on these schemes so no terminal has more than 2 connections to solder. On a Super Switch there are open lugs thin wire can be looped through to help. I think this will be even trickier on the single wafer solder pad design of the Megaswitch. YMMV... good luck.
sdugf-orpheo-s50.pdf
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I've always done inner coils in series because as I think someone here said its more like a "virtual" middle pickup especially on a 24 fret guitar.
