Split coil switch on Warwick

[B.Flat]

Hi.
Anyone out there can tell me how to wire coil splitting switches to a Warwick Corvette $$ ?
I want to be able to switch either pick up to single coil, with a choice of which coil in both pickups.
I presume a 3 position DPDT switch, centre OFF, will be required for each pickup, so that I can retain the orginal configuration.
Any advice please ?

[verb]

Here is the standard schematic, it may be of help.
I think the neck pickup C+D is a typo.

http://www.warwick.de/warwick/data/Warwick.de/Technical%20PDF/Scematic/Warwick/W_CorvetteDB_60014DB.pdf