I have a completely bone stock 00' Jeep Grand Cherokee , its my daily driver and im looking to get the most out of my equipment. My sub of choice was a 15" AQ HDC3 w/copper coils after reading alot of good things on here about them. The amp i have came with the sub as a package deal so its what i have to work with for now, its an AQ 1200D. Truck is ran with a JL audio 4awg wiring kit and thats it, with a 80amp fuse under the hood. I know i got some work to do such as the " Big 3" and throwing an extra battery in the back. Is the 4awg hurting my setup do i need 1/0 gauge, or is it ok because my amp isnt that big? My lights are dimming like crazy, want to get my daily rockin ! Heres some pics of my equipment.