Wire van fridge for 12v

[BlueBear]

This calculator is simple and easy, just keep in mind it's in feet - not metres.
https://www.wirebarn.com/Wire-Calculator-_ep_41.html

Also keep in mind that every join in the wiring such as an anderson plug for instance, increases the resistance and therefore making greater voltage loss.
My recommendation would be to use the calculator and instead of choosing the minimum recommended, go one higher.

Cheers,