Re: Has anyone tried wiring single coils in series?
I've got two guitars with that option. One has 3 G&L ASAT soapbar singles which are very bright and cutting. The other has very low output singles. The middle is just over 5k, and the bridge is a 6k tap/8k+ full. The G&L in series is very "classic Kings X" sounding. It's still got snap and bite. With the two lower output singles, I use the tapped bridge output for the series wiring, and it's definitely not dark. The singles are all 42AWG.
In my experience it's mostly valid as a bridge/middle combination. If you've got an H/S/S then combining neck and middle in series will be okay, but Zhang's right, that's a little hot when positioned up toward the neck.
For me, the fun sound to experiment with would be the bridge pickup, bridge side coil+middle pickup in series. But I don't know if you have the polarity orientation to make that hum-cancelling.