Following on from Pietro_Moog’s post, I could agree that SOME humbuckers might not sound too good when split (although I’ve always used quality pickups and never heard a bad-sounding split).
My preference is, rather than splitting the humbucker, to rewire the two coils in parallel rather than in series. This gives a brighter tone while still keeping the humbucking properties.
Once again, there are plenty of diagrams around the web for this, but you could try the Seymour Duncan site (SD normally includes such wiring diagrams with their pickups).
Hope this helps.
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