In this post I will show you a wiring diagram of the neck pickup switch. This is something uncommon, what David Gilmour has got in his signature Stratocaster guitar - Black Strat. It allows him to switch-on the neck pickup, when the selector is connecting only the bridge or the bridge and the middle single-coils. In this way, he can play on the „neck + bridge” pickup configuration, or even on all single-coils together.
Diagram:
