Charles Schuler said:
Not sure that I understand what you want to do. I'll guess that you want
to identify the wires because they are not marked or coded in any way. If
you have a voltmeter, you can connect a AA cell at one end and then
measure the dc polarity at the other end.
Unless someone has fitted new wires that are identical, there must be some
identifying mark(s) on them. Are they individual wires, or a piece of twin ?
If twin, there will usually be a stripe on one wire, or text printed along
the sleeve, or a difference in the sleeve profile between top and bottom, or
even the strands inside may be different colours - gold in one conductor,
silver in the other. If it really is two absolutely identical wires, then
you will need to get at both ends, and use a battery and meter as suggested
by the other poster. Alternatively, you can connect to the speakers with no
regard to polarity, then use at 1.5v cell at the far end. The speaker cone
will move either out or in. So long as you then pick one wire to arbitrarily
be "+", and arrange for the same direction of cone movement on the other
speaker, to arrive at a similar arbitrary "+", then your speakers will end
up correctly in phase with one another.
Arfa