What gauge of wire should I use?

Question

I'm going to be running wire 10-12' under carpet in my car. It's going to be carrying 70W RMS. What gauge of wire should I use for that load?

Thanks in advance.

Answer 1

well 10 would be enough but i'd go with 0 or 4 gauge in case i decide to upgrade

Answer 2

8 gauge will be good  but a 10 gauge will be enought  most likely that amplifier is only going to need 25 amps