Quick question for everybody on the board, I see that when people talk about the Big 3 (some say replace the wires, while most say not to touch the factory wires and add on). When I did the Big 2, negative battery terminal to chassis and engine block to chassis I replaced my wires. Did I affect any thing by replacing the wires, havent noticed any electrical problems at all just curious to see if it will affect me in the long run or anything? The negative battery terminal to chassis was a 4 gauge wire replaced with 2 runs of 1/0 awg wire. The engine block to chassis was a 4 gauge wire replaced with a run of 1/0 AWG wire. Thanks for any valid input and replies.