I know there's a way to do this... but I think I'm staring at diagrams too much and making it harder than it should be.
I have a strat with standard 3 pickup setting (two single-coil, 1 humbucker), 5-way switch, and the usual strat pot configuration (i.e., 3 pots, 1 vol., 2 tones).
What I'd like to do is use one of the Tone pots to vary the humbucker between full and split-coil. I've never needed the 2nd tone pot as a tone control anyway, so I'd like to use it instead of installing push-pull switch for the coil-splitting duties. Then, of course, I want everything to meet up at the switch more or less like it would be with a standard H/S/S arrangement. That would give 1 volume, 1 tone, and 1 pot being used as a "switch."
Not sure if I described that correctly... But can anyone offer guidance? Checked the usual suspects for wiring diagrams, but can't find just what I'm looking for on their sites.