Yep. They're an 'upgrade' with the centre tap.

Funny. Last night I couldn't find a suitable circuit to save my life. Now that Weirdbits has helped me, I seem to have hit the 'Mother Lode'!

I found this...

http://www.guitarelectronics.com/cat...ring_diagrams/

and it seems to have every configuration you could ask for.

BUT... what's the difference between;
http://www.guitarelectronics.com/pro...Coil-Taps.html
and
http://www.guitarelectronics.com/pro...-Parallel.html

I just thought my guitar was humbucker with the push/pull knob pushed down, and single coil with the push/pull knob pulled up?