What gauge wire for the PDC?

Sorry for the noobish question... What gauge wire runs from the battery to the PDC?

I had installed a larger gauge cable to replace the original. But now I am relocating the battery to the other side of the engine compartment. So I need to run a long wire from the battery to the PDC.

Thanks.

I think it is 12,just make sure you have a fusible link in between.

It's bigger than 12 gauge. I would think 4 gauge, but I'm not sure.

It looks to be about 8 gauge. When I up my mains to 2, I'm gonna up that one to 4.