My 4-Way Wiring Colour Codes:
Looking from above with the lead wire exiting the pickup baseplate from the bottom left:
HOT: Green or Yellow
POLARITY: South Up
POLARITY: North Up
if not using the 4-way then its:
... and solder the Yellow/Green wire and White wire together before taping them back with electrical insulation tape.
For regular vintage braided wire the outer metal braided sleeve is GROUND and the inner wire core is HOT.
If you're using the Seymour Duncan Wiring Diagrams, here are the conversion colour codes:
Creamery Green (Sometimes Yellow) = Duncan Red
Creamery Black = Duncan Green
Creamery Red = Duncan Black
Creamery White = Duncan White
White/Cream = Hot
Black = Ground
if there is a seperate Red wire, this is a seperate ground for the baseplate to ensure 'in-phase' with other manufacturer pickups.