color code for reverse light? '91

ok, so i recently bought a 91 accord that has altezza taillights uinstalled, but for some reason the reverse lights were tied into the parking lights circuit. i looked at another accord with altezzas, and i think the positive wire is supposed to be 2 over in the harness, so i'm gonig to try playing around with that. i was hopnig someone could tell me what the color should be for the reverse lights though. thx.