This is what I did, 1 gauge wire to a cut off switch, from the switch I then ran the wire on the inside across the back seat and then up the drives side (same as the factory did) out the firewall through floor plug to the starter. Next 1 gauge wire from the starter terminal up to the starter relay. The reason for the cutoff switch is I like to kill the power when not in use, like at home, car shows, cruise nights and it makes it harder to steal the car too. I also installed a 1 gauge wire from my transmission to the car frame, you can not have enough grounds. The car starts just as good when I had the battery up front.
