Ontario niagara region. i am 18, just getting into car audio, not much further than a deck and replaceing stock speakers, as it is a 95 trans port.

i got the grills off, now im looking at the speakers, got them off but the wiring is my question now

Left Speaker has A and B on the wire harness plug, the A side of the plug connects to the Grey wire, the B side to the Brown wire

Right speaker- A is Green and B is lime

question is which is + and which is -

and to give ya a little background on my audio setups so far, other than home audio (which is too easy) and a few decks under my belt (also very easy) i dont have much, im more into computers (but i guess that could be a helper with audio )