5S-FE MK2 Non-Turbo Engine Alternator replacement

5S-FE MK2 Non-Turbo Engine, horn, aftermarket, thing, supertone, work, clock, spring, dead, hids, twosrus, needed, hella, back, replacement, upgraded, headlights, remember, modern, headlight, autozone, alternator, cheap, fairly, leds

Hi all, My alternator crapped out. Got a used one, ready to put it on. Took out my old one and the electrical connecter is not a single three-pronged plug, but three individual wires with leads. One red, one black, one white. My question is - does it matter which wire plugs into which prong? I checked the BGB but it seems to show a three-prong plug that only goes in one way?