Originally posted by the fool
... If a four conductor cable won't alter the sound of my pickups in any way, which one should I do- add an out of phase switch or add a four conductor cable? which one would produce the best single coil sound? ...

Do the conversion to a 4-wire setup. Change two of your pots to push-pull types so you can select series/parallel coil connection. Series connection is the normal humbucker - parallel connection gives you a good single-coil sound while retaining the hum-cancelling feature of the pickup. You can also add a phase switch to give some additional options.

Out-of-phase humbuckers give a low output with a 'hollow' sound that's almost like flanging. If you have separate volume controls you can adjust the pickup balance to get the optimum mix of output/phasing.

I play Yamaha SBG1000 guitars with DiMarzio 4-wire pickups in them. The stock setup had coil tap switches in the Tone pots that I rewired for series/parallel selection. I changed out one of the Volume pots to include a Phase switch. That provides a dozen possible combinations. I don't routinely use all of 'em, but I don't have to settle for same-old-same-old either.