Ok my battery doesnt charge and my lights are always very very dim. i have to let the battery charge by boosting it with another car. i think i know the problem but i dont know how to fix it. all my grounds are good but on the back of the alternator where the plug goes, (the one with the 2 wires) well the red one seems to go where it should but the blackish brownish one is twisted together with 2 other wires. im pretty sure thats not where it should go. Where should that wire lead and how to fix?