Seymour Duncan - Here's a fun wiring mod which is especially great on Ibanez, Jackson, Schecter and ESP-style twin-humbucker shred machines. | Facebook
A 2 Humbucker Style Wiring Harness – 5-way lever switching that splits both humbuckers | Hoagland Custom
IronGear Pickups - Wiring
Custom wiring 2 Hum, 1 Vol, 1 Tone (push/pull), 5-way super switch - Seymour Duncan User Group Forums
I'm going to be wiring two humbuckers with a master volume, 3 way switch, and coil split switch. This is the closest diagram I can find, except it uses a push/pull tone
2 humbuckers, 5 way switch wiring | The Gear Page
2 Humbucker 2 Volume 1 Tone 5-way – Roswell Pickups
2 humbuckers, 5 way switch wiring | The Gear Page
Stratocaster Wiring Harness, to split the 2 humbuckers, 1 Volume, 2 Push/Pull Tones | Hoagland Custom
MM 5 Way Switching in Parallel Wiring | TalkBass.com
Prewired Guitar Harness Kit 1 Volume 1 Tone 1 3 Way Blade Switch for 2 Humbucker | eBay
Wiring Problems With A Fender Strat. | Axe Central