Hi, I recently installed an amp for a pair of 10" subs, and I am about to install a 4-channel amp, as well. I would recomend a wiring kit. I used one for my sub amp and it was great. Try Street Wires: http://www.cardomain.com/item/STRPS04RSI
. You'll probably need around a 4-gauge kit, but don't take my word for it. Good luck!