How do I wire the input to a 2 chan. amp???? I ran the Power wire, Remote wire and ground but I got the LOC and I just dont know what color wires to tap into at the stock amp.... I tried to use the Purple and yellow wire but when i did the stock sub would not work. The LOC has 4 wires, right side input(+),right side input(-), left side input(+) and left side input(-). What wires do I tap those four into?????????