Time to resurrect a zombie thread, sorry.

I've been googling for the last couple of days as well as using the search function here and not finding what I am looking for ( maybe need new glasses )

I've just sorted the hum on my mates Tele with HB neck and SC bridge pups and now having told him that the selector is stuffed he wants a wiring change that I can't find a circuit for.

He's purchased a genuine Fender 3 way and push / pull volume pot and wants the HB changed from standard config to coil split via the PP.

The HB is supposed to be a Seymour Duncan but is unbranded, the wire colours are correct but the guy who wired it joined the black & white rather than the usual red & white ( standard of soldering was appalling with chicken sh1t and melted insulation everywhere)

The whole guitar is pretty weird, on Reverb.com the serial shows as a 93-94 MIJ Tele but the Fender serial search has it as a 2003-04 Jazzmaster Special Edition. The neck also has an allen key adjustment at the heel which I've not seen before.

Regardless of what it really is he loves it and it's really nice to play so any assistance here will be greatly appreciated. ( weirdy )