#2
What's the deal with all these stupid 59/69 guitar threads today?

Anyways, they prolly are labeled, you just haven't found it yet. You can get a multimeter and check the ohms to see which has the highest output, which that will be bridge, and so on and so fourth.

Or, the pickups are all the same output, and it doesn't matter, I know the older Fender used to sometimes do that.