Deere 310 L. Battery cable gauge.

I want to add a battery disconnect switch to my 2016 Deere 310 L. I bought the switch from Deere, and need to make up a cable to go from the switch to the engine. Anyone know what gauge the battery cable is? With the insulation, it appears to be about 1/2 inch wide, so I'm guessing maybe 1/0 or 2/0? Anyone have any idea? Thanks