I am thinking about relocating my battery to the rear of the car, but what guage wire should I use. I know there is a formula for calculating the gauge based on distance from the source, but I don't know what it is. I don't have a high power system or anything so the smallest proper guage should work fine. I will probably just put in a breaker box or something to attach the current terminal wires to the ones I will use to run to the rear of the car. Also, should I run the current ground from the terminal, or should I just ground it in the rear of the car? Does anything else attach to the negative terminal that would makes this difficult or so I just relocate the battery and ground the battery to the closest source? By the way I am moving the battery for better weight distribution and handling, not for a system or anything.