so i have a 20 foot 4 gauge wire from battery to amp.... and for the ground wire... i have a 2 foot 8 gauge... will anything change if i change the 8 gauge to a 4gauge??? thanks...
if you change it to 4 gauge; if anything it will make it better. (it will not go worse). second, usually the wire from the battery and the ground wire should be the same gauge. Plus try to keep you ground as short as possible.(2 foot might a little big. try to keep it between 1 foot and 18 inches.. but off-course you can go shorter than a foot on ground)
it'll basically be just like having a bad ground. current can flow to the amp easily, but not from it back to the battery. kinda a back up if you wanna look at it that way.