well after i turn the system off at night after being played for about 20 min, the headlights are really dim, i have to drive like that for about 10 min so they go back to normal, i was thinking my battery died alredy and it's only 3 months old a diehard just in case it makes any diffrence,,, well now im planing on 2 caps since their only like 80 for the digital rockford fosgates ones, with my discout ,

whats the diffrence between the yellow top and the red, etc batteries????