our code is:
Black: screw start
White: screw finish
Red: slug start
Green: slug finish
the bare wire is grounded to the back of a pot as rsterren said.
Tim is on a well deserved break this weekend and wont be back in the workshop monday afternoon, give us a ring then and we can talk you through it.
FELINEGUITARS may be able to help you with this one. He's installed our pickups in lots of guitars!
the springs go on the mounting screws when you mount them on the guitar.