so far i have ordered my front components(b2 audio es6.1), the amp for those(sundown sax 125.2), and my subs(2 sa-12). im getting the amp for those on january 19th(my birthday) and that will be the saz1500d.

im going to have it installed but i want to buy as much as possible myself. so now im trying to figure out what kind of wire i need to order? i looked at knuconceptz website and im still not sure what i need. i have NOTHING as far as wire and stuff goes. i see on forums that people are fond of 0 and 1/0 wire for power and ground but after that im lost??

also, as a side question, do i need to upgrade my electrical for this set up? do i need 2 batteries? i drive a 2008 dodge nitro(stock). i have a double din kenwood head unit if that helps with anything.

thanks in advance for any help and happy new years to everyone!