purple and blue? thanks a lot guys, that was real useful
(i wonder if this is even really a fender pickup.)
if you can see where the actual coil wire leaves the coil and goes to the connection to the leads, we might have a clue here;
normal single coils have the winding start at the ground end (so it's against the magnets, to keep them from being noisy when touched) and stop at the hot end (so it's on the outside).
if you can tell by the fine coil wire which end is wrapped on the outside and which end sort of disappears underneath to go to the inside, that'll tell you which is which; the outside wraps go to the hot lead.
for that matter, just hook the wires up with alligator clips to an amp input cable; one way the magnets will be a lot noisier when you touch them, and that will be the "wrong" way.