Okay, on an 1157 bulb , you have one pin lower on the bulb and one that is higher up on the bulb . The bulb only fits in the socket one way, which pin would lead to the brake light part of the bulb , the lower or the higher pin? I know its kind of a stupid question, but i can't find any info on this. When i use a 12 volt battery, no matter what i do, i can only light up the top filament, but not the lower, so i can't figure out which wire to connect too for brake/turn and taillight........