What I recently did to a two humbucker guitar (a Tele Deluxe partscaster equipped with a Bareknuckle set of True Grit bridge, Abraxas neck) with a normal 3-way toggle and two push-pulls is the following:
-Push-pull no. 1 selects whether the bridge coils are in series or in parallel.
-Push-pull no. 2 puts the neck pickup in phase or half out-of-phase with the bridge pickup (half-out-of phase meaning that in that setting there is a 0.015uf cap in series with the neck pickup. I tried 0.01uf first but that was too boomy).
So I get the following sounds out of the guitar:
- Toggle #1: a) bridge series (the "rock tone") or b) bridge parallel (the "country tone")
- Toggle #2: a) both in parallel in phase, bridge series, b) as before, bridge parallel, c) both in parallel out of phase, bridge series, d) as before, bridge parallel. All work well clean, with little or much gain.
- Toggle #3: a) neck normal, b) neck out of phase = neck with a bit less low end (since the cap is in series with it).
This should work well with any two DiMarzio humbuckers as well.
Cheers Stephan