Without a make and model number for the fridge, nor make and model of RV, not sure anyone can help.
Could be a 3-way fridge or a 2-way fridge. Even pics would be helpful.
Dan-Retired California Firefighter/EMT
and Zoe the Wonder Dog(R.I.P.)
2016 PrimeTime TracerAIR 255, pushing a 2014 Ford F150 SCREW XTR 4x4 3.5 Ecoboost w/Max Tow Package
4pt Equal-i-zer WDH and 1828lbs of payload capacity