Here are some images I fixed up to show the various wirings that I've noodled around with. Thanks to the various Les Paul forums for all the info I've pulled from the past posts and to
Black Rose Customs for including a diagram of their kit wiring on their website.
Here are some small MP3s that demonstrate the difference between Parallel and Series wiring. You will first hear the neck and bridge pickups in parallel, then the neck and bridge pickups in series. No settings were changed for each part of the recordings except to switch from parallel to series coupling of the pickups.
More info here...
50s style wiring diagram
Modern style wiring diagram
Standard style wiring diagram
50s wiring diagram
Modern wiring diagram
Standard wiring diagram
Les Paul wiring diagram
Stock wiring diagram
Series Parallel dual pickup
Armstrong super strat