Dmac1991
'12 Focus Bangin
no I mean I ran 4 gauge power and ground wire from the front battery to the back of the vehicle where you have your amp.I already did the Big 3, so i assume you changed the 4 gauge wiring is like a harness or something for other wires etc. Is there anything i should check out by doing this. I don't really know where to start when i google it. Thanks for your time.