Engel Hardwiring - 24V

I've recently bought a HJ61 'cruiser that came with an old Engel fridge, capable of running on 24V (The car is a Japanese Import)

My problem is that the previous owner simpy cut the plug off the fridge, ran cables from the batteries to the back and hardwired the fridge without a switch or fuse! I tested the fridge with my 12/24V power supply and it still works well so i'd like to keep it.

I'd like to install a plug and socket in the back of the car so I dont have wire hanging everywhere in the back, what 24V socket and plug sets work best? I was thinking of using the Engel Posi-fit lead and using that as the new power lead at the fridge end, then an Engel 2pin socket in the car. These are the leads that come with the new fridges which are also able to run on 24V.

What size fuse(s) should I be putting in-line from the battery end? I'm pretty sure that the start-up current of the compressor motor is 1.83A max @ 24V, will a 2A fuse suffice?