relocating battery

Lots of ways to do this. Some safer than others. I use a Ford style starter relay and CD relay to kill the alternator line. Nothing is hot outside a 2' cube around the battery in my cars. I don't like running any starter loads through the cutoff switch, don't care what the load rating is on the switch.

I build 1/0 battery cables using welding cable and other things for doing this. Pick a way to do it and go with it.

Anyone that complains about the extra weight of any wire in my cars doesn't see the safety aspect of the design. The extra wire in my cars is about 6 pounds... totally insignificant.

Only good thing about summit is the free shipping. Not sure where the wire they supply is coming from. I only use US built wire if I can help it.