Received the quick disconnect switch today. That was quick! Ordered it on the 24th.

I intend to mount the switch above the floor, either in the nav compartment or somewhere in the back that is out of the way.

The OEM cable is 4 gauge.

I will be adding no more than two feet to each cable. I don't know that much electrical. I do know I ain't gonna git horse kicked off the barn agin, oow-weee that was a toe curler. I am not familiar if or how much I need to increase the gauge for the additional cable. I don't want it any thicker than it has to be because it will be harder to run and likely won't run in some of the places smaller diameter wire can.

Question is what gauge cable is critical to use for the additional 4 at most feet?

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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior
Dallas