Those 4 smaller white wires go to the fuse box if i remember correctly. I got rid of them totally and used 1 4awg. My setup basically is '4ga wire from the starter and alternator to a distribution block and the 4awg wire from the fuse box as well, so thats 3 wires going to the dist. block and a 1ga wire running to the truck to a 160amp fuse then to battery. And battery is grounded in the back.