I finally installed my amp and subs(hifonics bxi 1206d and 2 12" rd classc d4) and at high volumes(42 or more out of 62) I get bad light dimming with headlights and my instrument panel. My car supposedly has a 105A alt. Would doing the big 3 with either 4 or 0 guage fix this? If not should I invest in a new battery? Idk what the good ones are. Would a optima yellowtop work fine as a stock replacement?