i'm going to get at some point a 600 w 4 channel amp. now, i'm shortly putting in an 1800 watt amp with 2 kicker comps. I wondered how i would install the other amp into the system. the RCA cables wouldn't be a problem, the soundstorm amp i have has an output so that would be easy but my questions are these:
1)how do i get battery power to the second amp
2)should i get a capacitor to prevent my headlights dimming

side question
what is a farad on a capacitor and how many do i really need