I want to copy my Maton BB1200 circuitry into my PBG build.

[WeirdBits]

BUT... what's the difference between [...]

The first link is to a humbucker/single coil diagram. When the pot is 'down' the pickup acts as a normal humbucker, when it's 'up' it cuts out one of the coils so you just have a single coil active (half the pickup).

The second link is to a series/parallel diagram. A humbucker is normally wired in series, so the signal goes through one coil and then through the other, which cuts out the hum and gives it the traditional warm fat humbucker sound. When the pot is 'down' the coils are in this series configuration. But, in this second diagram, when the pot is 'up' it links the coils in parallel instead (the hot from each coil is linked and the ground from each coil is linked. This still cuts out the hum but gives a completely different sound, more scooped and thin, with a little less volume.

If you want to see which configuration your BB1200 has, just plug it in at low volume and with the pot 'down' gently tap the pup's pole pieces with a screwdriver, then repeat with the pot 'up'. You'll hear the tap if the coil is 'on'. If only one coil is active when 'up', it's humbucker/single coil, if both coils are active when 'up' it's probably series/parallel.

[Muzza]

Thanks. I'll try that when it stops raining and I can make a dash to the studio. Although, I'm pretty sure it's a 'humbucker up / single coil down' configuration.

Maton proudly boast that they've been able to engineer a switchable humbucker with no significant volume drop when going to single coil. I wonder how they've achieved that? I can confirm that, in single coil mode, it is definitely louder than my Maton T-Byrd. (Maton's Telecaster offering) (Every bit as good as a Telecaster, I might add.)
(I've got to be careful. People will start to think I can actually PLAY these things...)