can you not look at where the wire comes out the bottom of the pup, as it should be nearest the controls etc. and then the screwpieces would tell you which one it was
I'd have to look at the Holy Diver set I've got at home (haven't got round to fitting yet :)) but I don't think that works - the wire emerges from the side with the screws on both neck & bridge (i.e. the corner furthest from the controls on the neck pickup)
I think that gingataff is right. If I understood his post correctly, do this:
Hold the pickups so that the pole pieces are horizontal with the back of the pickup facing you.
Turn them so that you can read the BKP logo the right way up.
The pickup with its screw coils on the bottom is the bridge.
The pickup with its screw coils on top is the neck.