the science/math behind wiring single coils together to make humbuckers

[joshuaeddy27]

one of my active builds at the moment is a telecaster and after seeing the twangbucker i started looking into way of doing with with other pickups.  my understanding is that any two single coils can be wired together to do this however there are only a couple other million consideration and i was wondering if anyone else had tried this and has any information.  what i can find elsewhere on the intertubes is rather general and lacks any kind of real information other that ensuring they are reverse wound... 
specifially, i was wondering if anyone has tried to do this with different pickups so they could run split coil and then have two different bridge pickups to choose from.  from this i wondered what the effect of different resistances woudl do once they came together.  im not sure if one would overpower the other and cancel at least a little part of the hubucking rendering this useless in the first place.  also, despite knowing a place that actually sells this pickup i cant seem to just find a bridge that would accommodate the pickups.  would i have to go somewhere and have someone custom make the bridge plate for the telecaster.  lastly is about bringing them together in the bridge.  if one used different pickups they would need mounted together but independent to allow each pickup height to be adjusted individually or would the act of wiring together negate this need.

[MDV]

Its dead simple.

Reverse wound.

Reverse polarity.

Normally wired in series (though parallel is also humbucking, but less common).

This way the noise generated by (not made by in and of themselves, but induced by ambient electrical fields, which there have to be, all the time) is cancelled (as are some of the frequencies generated by induction due to a string vibrating near it).

The cancellation is by nothing more than number of turns. An equal number of turns in each wind is a 'perfect' humber, and any excess in one coil act as single coil turns (this is a feature if many BKs; there is an offset so that there as some turns that still make single coil tone, but not enough that the pickup as a whole is noisy).

You can pair any single coils into a humbucker, in principle, as long as they are RPRW, and how humbuckery the pickup you get will be is determined by how many turns each single coils has. What actual tone you get is entirely another matter, and totally unpredictable.